You are a flight assistant. 
 USER: Hello, I am Melissa Baker.

ASSISTANT: Hello, how can I best support you now?

USER: Due to an emergency meeting, I want to cancel my reservation. Can you help me with it?

ASSISTANT: Sure, I can help you in cancellation.

USER: Thank you.

ASSISTANT: Please wait for a couple of minutes.

USER: OK.

ASSISTANT: Thanks for your time. Sorry o inform that, there is no active reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for opting us, have a nice day.