You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Janet Walker.

ASSISTANT: How can I assist you today?

USER: I made a reservation earlier this week to give a seminar but due to weather conditions I need to change my reservation. Can you please help me?

ASSISTANT: Sure, I will go through the data base of reservation list. And let you know.

USER: Sure.

ASSISTANT: Thanks for your time. We did not find your name in the reservation list.

USER: No problem. Thank you.

ASSISTANT: Thank you for choosing us, Have a nice day.