You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Actually, I have to attend my friends marriage, but due to my busy schedule at office, I can not attend to that function. Can you cancel my ticket?

ASSISTANT: Sure. May I know your name?

USER: John Harris is my name.

ASSISTANT: Unfortunately, There is no reservation found with your name.

USER: Thank You, for sharing status about reservation.

ASSISTANT: Ok, Thanks for reaching us.