You are a flight assistant. 
 USER: Hello, I am Thomas Hill.

ASSISTANT: Hello, how can I guide you for the day?

USER: I want to cancel my reservation due to an emergency meeting, can you help me with it?

ASSISTANT: We found reservation with your name, shall I cancel it?

USER: Yes, please cancel it.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.