You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I have planned to book a ticket from LAS to PHL, can you assist me in booking?

ASSISTANT: Sure, on what dates are you planning to make your trip?

USER: My trip dates are Dec 15th and Dec 17th.

ASSISTANT: How many connections do you need?

USER: I need one connection between my trip.

ASSISTANT: Any other requirements to be met?

USER: Make sure that my return time must be evening.

ASSISTANT: Please forward me your name.

USER: Nicholas Martinez.

ASSISTANT: Ok, there is a flight matching all your credentials.

USER: May I know the flight details?

ASSISTANT: Southwest airline with flight number 1001 and the airfare is 200.

USER: Proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for booking.

ASSISTANT: Thanks you for choosing us.