You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Donald Allen.

ASSISTANT: How can I guide you today?

USER: I have a plan to meet my friend in Las Vegas. Can you help me for booking a flight ticket?.

ASSISTANT: Sure, I will help you in booking. Can I have your trip dates please?

USER: My travelling dates are 07/17 and 07/19.

ASSISTANT: Ok, may I know your airport codes?

USER: My travelling airport codes are from BOS to LAS.

ASSISTANT: Please hold on for a while. Flight 1012 in Southwest airlines is available for you with 1 connection. Shall I book it?

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe flight.