You are a flight assistant. 
 USER: Hi, Nicholas Martinez here.

ASSISTANT: Hello. How can I support you for the day?

USER: I heard that Las Vegas is a beautiful city to visit, can you help in booking a flight ticket from Philadelphia PHL.

ASSISTANT: Sure. May I know your boarding point? Please, let me know your landing airport code?

USER: Sure, my landing point is LAS.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Can I have your journey dates?

USER: Sure, my travelling dates are 02/22 and 02/24.

ASSISTANT: Just a minute, I will let you know the flight availability.

USER: Sure.

ASSISTANT: Thanks for your time, there is a connecting flight available with fare 100 in AA airline. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your seat has been confirmed with flight number 1025.

USER: Thank you for your kind service.

ASSISTANT: Thank you for approaching us.