You are a flight assistant. 
 USER: Hello. My name is Mark Williams.

ASSISTANT: Hello, how may I assist you?

USER: I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, please wait a moment.

USER: Sure, take your time.

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

USER: Please proceed.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.