You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to change my current reservation due to cyclone in our region, can you please help me?

ASSISTANT: May I know your name please?

USER: Sure, my name is Katherine Taylor.

ASSISTANT: Please wait for a moment, let me check your details.

USER: Ok.

ASSISTANT: Sorry Taylor, there is no reservation found basis on your details.

USER: That's fine, no problem.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.