You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Linda Jones. I want to cancel my flight ticket, due to some problems I am unable to travel in flight so can please cancel my flight ticket?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok, thank you for your positive response.

ASSISTANT: Linda, there is no reservation found under your name.

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

ASSISTANT: Thank you for contacting us, have a great day.