You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please change my reservation due to exam postponed?

ASSISTANT: May I know your good name please?

USER: James Parker is my name.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: There is no reservation found with your given name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for choosing us.