You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I have planned to book a plane ticket from SFO to AUS, can you assist me?

ASSISTANT: Sure, I am happy to help you with that.  Can I have your travel dates please?

USER: My preferred dates are May 21st and May 23rd.

ASSISTANT: Ok, please let me  know your preferable timings.

USER: Am Ok with any time.

ASSISTANT: Do you have any other specifications?

USER: I need to travel in economy class.

ASSISTANT: Can I have your good name please?

USER: George Nelson.

ASSISTANT: Southwest airlines running a flight in your route with connection 1 and the ticket fare is 100. Shall I proceed with booking?

USER: Proceed.

ASSISTANT: Ok, your ticket booking has done and the flight number is 1003.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us, have a great journey.