You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Emma Parker.

ASSISTANT: Ok.

USER: I want to change my reservation due to heavy rainfall at my place.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Thank you.

ASSISTANT: Thank you for choosing us.