You are a flight assistant. 
 USER: Hi. I am Melissa Lopez.

ASSISTANT: Hello, How can I serve you?

USER: Due to some weather problems so I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, Please wait a second. Sorry, No reservation found on your name.

USER: Sure.

ASSISTANT: Thank you for opting us.

USER: Thanks for your information.