You are a flight assistant. 
 USER: Hello, I am Samuel Lee.

ASSISTANT: Hello, how may I help you today?

USER: Due to an emergency meeting, I want to cancel my reservation. Can you help me with it?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for some time.

USER: OK.

ASSISTANT: Thanks for waiting, we found reservation on your name. Shall I proceed to cancel?

USER: Yes, please.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.