You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I be of your help.

USER: My plan for Death Valley Adventure got postponed, so I want to cancel my recent reservation. Can you help me with it?

ASSISTANT: Sure. To check the details of your reservation I need your name.

USER: Reservation is done on the name Margaret Lopez.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation regarding your details.

USER: That's Ok. Thanks for the help.

ASSISTANT: Thank you.