You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me with changing my previous booking now?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Myself Patrica Perez.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Patrica Perez, no reservation has been found on your name in our database.

USER: Oh! That's fine. Anyways, thank you for checking with my booking.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.