You are a flight assistant. 
 USER: Hi, I am Rebecca Miller'.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to cancel my recent reservation as my appointment with my doctor got cancelled.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

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

USER: Yes please.

ASSISTANT: Ok, your reservation has been cancelled.

USER: Thank you for helping me.

ASSISTANT: Thanks for choosing us.