You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best can I aid you today?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, please share your good name?

USER: Myself Michelle Martinez.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no active reservation found with the given name.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you.