You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Thompson.

ASSISTANT: Donald, how can I aid you today?

USER: I have planned to go to a trip with my friends by the end of the day my passport has been stolen by some so I want to cancel my reservation. Can you help me?

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Sorry Donald, there is no reservation found by your name in our website.

USER: That's fine. Thank you.

ASSISTANT: You are welcome, have a nice day?