You are a flight assistant. 
 USER: Hi. I am Mark Wilson.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, we are here to help you. Please hold a moment, let me check your reservation with us and let you know.

USER: Sure.

ASSISTANT: Thanks for your valuable time, unfortunately no reservation found with provided name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for connecting with us, have a great day ahead.