You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your service?

USER: My plan to attend function got postponed, will you help me to cancel my recent reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thanks.

ASSISTANT: Please let me know your name to check the reservation status.

USER: Sure, my name is Barbara Baker.

ASSISTANT: Ok, please wait a moment.

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: Ok, thank you for your help.

ASSISTANT: Thank you for consulting us.