You are a flight assistant. 
 USER: Hello. I am Donna Martin.

ASSISTANT: Hello, how may I assist you now?

USER: As my meeting has been postponed, can you please cancel my reservation?

ASSISTANT: Sure, I will help you to cancel your ticket. Please wait, while I check for the reservation.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for waiting, we hope see you again.