You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Jack Young.

ASSISTANT: Yes, Jack.

USER: I would like to cancel my reservation as I am not feeling well, can you please help me out?

ASSISTANT: Sure, please be hold on. There is no reservation found under your name, Jack.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us.