You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello,. How can I provide service to you?

USER: Can you help me cancel my reservation which was made on the name of Mary Lopez?

ASSISTANT: Sure, I can help you in that. Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for your time. Sorry Mary, there is no active reservation on your name to cancel it.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for choosing us.