You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Nicholas Wilson.

ASSISTANT: Nice to meet you Nicholas.

USER: Owing to an emergency I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

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.