You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: As my health condition was not good, I need your help in cancelling my earlier reservation.

ASSISTANT: Sure. Can you please provide your name?

USER: I am Brian Gonzalez.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry we did not found any flight reservation on your given name.

USER: Ok. Thanks for the information.

ASSISTANT: Thanks for choosing us.