You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am James Young and I need some help in my flight ticket modification, can you please help me in that one?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for considering my request.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: Ok, that's fine. Thank you for your information.

ASSISTANT: Thank you for contacting us, have a nice day.