You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Frank Gonzalez, I want to cancelling my recent reservation, help me in cancelling my reservation.

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found in your name.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.