You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you cancel my flight ticket reservation? As I am planning to postpone my vacation due to health reasons.

ASSISTANT: Sure, I am oblige to help you in that one. May I know your name for checking?

USER: Jonathan Thompson.

ASSISTANT: I had found your reservation and I successfully cancelled the ticket.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us. have a nice day.