You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: My name is Rachel Miller. Owing to emergency, I need to cancel my recent reservation. Please help me with that.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

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

USER: Please go ahead.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.