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

ASSISTANT: Hello. How may I serve you?

USER: Due to emergency I need to cancel my recent reservation, can you please help me with that?

ASSISTANT: Yes, please I will help you with the cancellation of flight ticket booking. Wait for a moment please.

USER: Sure.

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

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you.