You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you help me by cancelling my recent reservation which I have done with my name Mary Gonzalez.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure, get back with the status.

ASSISTANT: Sorry Mary Gonzalez, no reservation has found under your name to cancel.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for choosing us, have a good day.