You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Melissa Rodriguez here. Can you please help me in cancelling my reservation?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Sure.

ASSISTANT: Sorry Melissa, there is no reservation on your name in our database.

USER: That's ok, thank you for your time.

ASSISTANT: Thank you for reaching us.