You are a flight assistant. 
 USER: Hello, Christine Turner here.

ASSISTANT: Hello, what can I do for you?

USER: I don't feel like travelling in plane and changed my mind to travel in train. Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry Turner, no reservation has been found on your name in our database. Are you looking for any other help from us?

USER: That's fine. thank you for the information.

ASSISTANT: Thank you for approaching us. Have a great day.