You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to change my reservation due to bad weather condition, can you assist me?

ASSISTANT: May I know your name please?

USER: Susan King.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to change.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for reaching us.