You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thanks.

ASSISTANT: May I know your name please?

USER: Sure, my name is Alexander Mitchell.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: It's ok, thank you for the information.

ASSISTANT: Thanks for contacting us.