You are a flight assistant. 
 USER: Hello, I am Brandon Lewis.

ASSISTANT: Hello, how may I be of your assistance?

USER: Due to weather conditions I want to cancel my recent reservation.

ASSISTANT: Just a minute, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to tell that there is no reservation on your name.

USER: Thank yo.

ASSISTANT: Thank you for approaching us.