You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Please inform me, How may I assist you the day?

USER: Due to some emergency I need to cancel my recent reservation can you help me with cancelling my reservation?

ASSISTANT: Sure, we are rapturous to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: I am Frank Johnson.

ASSISTANT: OK, please wait for a couple of minutes.

USER: Sure.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.