You are a flight assistant. 
 USER: Hello, Mary Gonzalez here.

ASSISTANT: Very Good Morning Mary, how may I help you?

USER: Owing to an emergency I have request you to cancel my reservation. Can you do this for me?

ASSISTANT: Sure Mary, give me a moment I will check with the booked history.

USER: Ok.

ASSISTANT: Thank you for patience Mary, there is no ticket showing on this name.

USER: Thank you for the information.

ASSISTANT: Thank you for choosing us.