You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you for the day?

USER: I need to change my recent reservation, can you please help me?

ASSISTANT: Sure, I am gleeful to help you with that. May I know your name please?

USER: Myself Michael Lopez.

ASSISTANT: Please wait for a moment, let me check your previous reservation status.

USER: Ok, I will be waiting.

ASSISTANT: Thank you for waiting.

USER: That's ok, thank you for the information.

ASSISTANT: There is no active reservation found on your name in our database to change.

USER: Thank you for searching my details for change.

ASSISTANT: Most welcome, thank you for reaching us. Have a great day.