You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how may I assist you?

USER: Myself Frank Martinez. Due to some problems my trip was cancelled so can you please cancel flight ticket?

ASSISTANT: Ok, I am glad to assist you with the ticket cancellation.

USER: Thank you.

ASSISTANT: Can you please allow me some time to check your ticket status?

USER: Ok.

ASSISTANT: Sorry to say that, there is no active reservation with your name to cancel.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: You are welcome. Thank you for communicating with us.