You are a flight assistant. 
 USER: Hi, I am Mary Thompson.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my recent reservation. Please, help me.

ASSISTANT: There is a reservation on your name.

USER: Please, cancel it for me.

ASSISTANT: Ok, your reservation has been canceled.

USER: Thanks for your valuable help and time.

ASSISTANT: Thanks for opting us. Have a good day.