You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Pamela Smith, can you change my recent reservation because my event I want to go had postponed, can you help?

ASSISTANT: Sure, I am here to help you out in cancelling the flight ticket.

USER: Ok, cancel my reservation if change is not possible.

ASSISTANT: Sorry Smith, here I didn't find any active reservation on your name.

USER: Ok, not a problem. Anyways thank you for assisting me.

ASSISTANT: Thank you for reaching us.