You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: David Evans here.

ASSISTANT: How can I help you at this moment?

USER: I would like to visit New York for a business conference, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please mention your travel dates for booking flight ticket?

USER: Sure, I am planning to go on 10/03 and please book my return ticket on 10/05.

ASSISTANT: May I know your preferable airport code names for further process?

USER: Sure, my nearest genesis airport code is SEA and my destination airport code is LGA.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok, take your time but try to bring a best flight in my route.

ASSISTANT: Based on your information, Southwest airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: That's fine, you can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1021.

USER: Thank you for your assistance in booking of my ticket. Have a nice day.

ASSISTANT: You are welcome.