You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patrick Jones.

ASSISTANT: How may I guide you today?

USER: I need an immediate help in my flight ticket modification, can you please help me in that one?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you for considering my request.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Sure, take your time.

ASSISTANT: We regret to inform you that, there is no reservation found on your name in our records.

USER: No issues with that one, thank you for your immediate response.

ASSISTANT: Thank you for reaching us, have a great day.