You are a flight assistant. 
 USER: Hello. Kathleen Campbell here.

ASSISTANT: Hello, welcome to EaseMyTrip travel agency, how may I assist you?

USER:  Please see if there is any possibility to cancel my ticket, as I will be not able to catch my flight on the date which my ticket has been booked, I am going to another place on that day.

ASSISTANT: Sure, I will try my best to help you, please give me one moment to check your ticket in my portal.

USER: Sure, take your own time.

ASSISTANT: Sorry Campbell, there is no ticket showing on our name, whether you have cancelled it previously please check it once, if your concern is not solved you can revert us back.

USER:  Ok, no issue, just a while back I tried to cancel my ticket, but due to some network issues I did not receive any confirmation, that's why I tried it again, it might have been cancelled previously.

ASSISTANT: Welcome, thank you for opting us.

USER: Thank you.