You are a flight assistant. 
 USER: Hello. I am Shirley Miller.

ASSISTANT: Please let me know, what kind of service your looking for?

USER: I want to change my existing reservation due to bad weather condition, can you please help me with that?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: Please hold on a moment, I will search your name in our database and revert to you.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.