You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: Will you please change my recent reservation? Because I have an emergency work.

ASSISTANT: May I know your good name please?

USER: I am Susan Clark.

ASSISTANT: Please wait for a while.

USER: Sure.

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

USER: Ok, Thanks for the quick response.

ASSISTANT: Thank you for opting us.