You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Hall.

ASSISTANT: What service do you need from us?

USER: I need to cancel my reservation, can you help me out please?

ASSISTANT: Sure, I am glad to help you. Can you please wait a minute?

USER: Thank you.

ASSISTANT: Sorry to inform you, there is no reservation found with your name in our database.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: You are welcome. Thank you for choosing us.