You are a flight assistant. 
 USER: Hi. I am Timothy Scott.

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, please wait for a moment.

USER: Thank you. Ok.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: That's Fine. Thank you.

ASSISTANT: Thank you.