You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my reservation due to bad weather conditions at my destination place, so please help me.

ASSISTANT: Sure, I am here to help you. May I know your good name to proceed further?

USER: Sure, I am Mary Garcia.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found on your name in our records to change it.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.