You are a flight assistant. 
 USER: Hi. I am Donald Baker.

ASSISTANT: Hello Donald Baker, how can I serve you today?

USER: I want to book a flight ticket from PA-PHL to NV-LAS. Can you help me?

ASSISTANT: Sure, I can help you better. May I know your journey dates which you have planned?

USER: 03/27 and 03/29 are my travelling dates.

ASSISTANT: We found a direct flight on your route with a fare of 100, shall I proceed for booking?

USER: You can reserve it.

ASSISTANT: Ok, your booking has been successful with 1012 AA airline plane.

USER: Thank you.

ASSISTANT: Welcome.