You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure. Please let me know your name?

USER: Thank you, I am Anna Carter.

ASSISTANT: Ok. Please let me check details with your recent reservation.

USER: Ok.

ASSISTANT: I regret, there is no reservation by name Anna Carter.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks. Have a nice day!.