You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am David Thomas. Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, I am glad to help you. Please be on hold.

USER: Sure.

ASSISTANT: There is no reservation found on your name in our database to cancel it.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for availing us.