You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I can help you.

USER: Thanks.

ASSISTANT: May I know your name to check the status and revert you?

USER: My name is Paul Thompson.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: We could not find any reservation by the name you provided.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us.