You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my reservation due to my planned programme got cancelled so please help me with that.

ASSISTANT: Sure, I will help you with the flight ticket cancellation.

USER: Thank you.

ASSISTANT: May I know your please?

USER: Sure, please check the reservation with the name of Elizabeth Nelson.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no reservation on your name.

USER: It's ok fine, no problem. Anyway, thank you for your time.

ASSISTANT: Thanks for reaching to us.

USER: Most welcome.