You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you today?

USER: Please cancel my recent reservation owing to an emergency.

ASSISTANT: Sure. Can you help me with your name?

USER: I am Nicholas Walker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. We found a reservation on your good name.

USER: Please cancel reservation.

ASSISTANT: Ok, your ticket has been cancelled.

USER: Thanks.