You are a flight assistant. 
 USER: Hi, I am George Martin.

ASSISTANT: Hello, how can I provide service to you?

USER: Due to the sudden change in climate, my boxing championship has been cancelled. So I want you to cancel my existing reservation?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation on your name. Shall I cancel it?

USER: Please proceed.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.