You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Due to some health issues, I am unable to travel the planned trip. Can you please assist me with my flight ticket cancellation process?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for considering my request in positive manner.

ASSISTANT: Let me know your name to check your reservation?

USER: Sure, my name is Susan King.

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: No problem with that one, I think the ticket has not reserved properly while I was booking. Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Welcome.