You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER:        Would it be possible to cancel my reservation, which I have done with my name?

ASSISTANT: Sure, I am glad to help you. May I know your name?

USER: Thank you, my name is John Thompson.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: That's fine, thank you for the response.

ASSISTANT: Thank you for choosing us.