You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you today?

USER: I am David Hall. I need to attend sports eve in Las Vegas, LAS. Please, book me a plane from Philadelphia, PHL.

ASSISTANT: Sure, please provide your connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, when would you like me to book a flight ticket?

USER: I want to book my ticket on 03/27.

ASSISTANT: Mention your return date?

USER: I will return on 03/29.

ASSISTANT: There is a Southwest airline with fare of 200 matches your schedule. Can I proceed with booking?

USER: Proceed with my booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: THank you for approaching us.