You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Green.

ASSISTANT: How may I assist you at this moment?

USER: Can you give some guidance in my flight ticket booking?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your planned dates of travelling?

USER: My travel dates are 05/19 and back on 05/21.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: My airport codes are DEN to DEN because it a round trip.

ASSISTANT: Please wait a moment to check the flights in your route.

USER: Sure.

ASSISTANT: Based on your information, Southwest airline is ready to serve you with 1 connection with a minimum fare of 300 is available for you. Shall I proceed with this?

USER: Yes, you can go ahead and confirm my flight ticket booking.

ASSISTANT: Ok, your ticket has been booked in flight number 1013.

USER: Thank you for your immediate help in my flight ticket booking.

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

USER: Most welcome.