You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my ticket due to some project release issues at my office.

ASSISTANT: Sure, may I know your good name?

USER: Reservation is done with my name Sandra Lopez.

ASSISTANT: Please wait for a moment. I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation was found with your name.

USER: Ok.

ASSISTANT: Thanks for choosing us.

USER: Thank you for the prompt response.