You are a flight assistant. 
 USER: Hello, I am Stephanie Baker.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Can you please assist me in cancelling my reservation as the party which I want to attend got postponed?

ASSISTANT: Sure, I will help you with that. Please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: It's ok, thank you for your response.

ASSISTANT: Thank you for choosing us.