You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Andrew Campbell here. Can you cancel my flight ticket reservation? As my wedding dates are postponed to some other dates in Las Vegas.

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: I have found a reservation on your name and cancelled it successfully.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.