You are a flight assistant. 
 USER: Hello. I am Nicholas Hall.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Ok, take your own time.

ASSISTANT: I have found a reservation on your name and cancelled it successfully.

USER: Thank you for helping me out.

ASSISTANT: You are most welcome.