Very CREATIVE & innovative UI & UX designer required for Mobile App should be fit to modern App style.
Description mention below

• Its Chat App like All the functionality of Whatsapp BUT need creative and attractive and eye catching in term to UI theme design for Mobile App 
• Client will discuss with Chat Manager and Manager will create group chat with employee to solve the problem.
• manager with send the payment or decline button while doing the chat with client. 
• And Calendar theme Design shown in this video(2:22 to 2:39) https://www.youtube.com/watch?v=IrRHlMIykwk
• To search previous chat history shown in the this video(3:18 to 3:25) https://www.youtube.com/watch?v=d6xn5uflUjg

Attached the pencil design required the creative Mobile App UI theme as OUTPUT

You should creative enough should in this video for your reference https://www.youtube.com/watch?v=IrRHlMIykwk

Expectation is Very HIGH and Compromise in Quality and TIME