You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation due to sudden cancellation of my trip. Can you help me?

ASSISTANT: Sure, I am willing to help you for this. May I know your name please?

USER: Timothy Roberts.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry for inconvenience, no reservation is found under your name to cancel.

USER: That's Fine. Thank you.

ASSISTANT: Thank you very much for contacting our agency.