You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to change my reservation due to an emergency meeting, can you please help me in changing the reservation?

ASSISTANT: Sure, may I know your good name please?

USER: I am Amy Lewis.

ASSISTANT: There is no reservation on your name.

USER: Ok, thank you.

ASSISTANT: Thank you.