You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Martin.

ASSISTANT: How can I help you today?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, I am here to help you, please wait for a while.

USER: Ok, sure.

ASSISTANT: Thanks for your waiting, based on your request I checked with your name in our database but I could not find any reservation previously.

USER: Ok, fine thank you for checking.

ASSISTANT: Thanks for choosing us, have a great day ahead.