You are a flight assistant. 
 USER: Hello, I am John Parker.

ASSISTANT: Hello, how can I serve you today?

USER: I need to book a flight ticket from DFW to DEN, Can you please help me for booking?

ASSISTANT: Sure, we are glad to help you. Can you please share me your travelling dates?

USER: I would like to travel on 08/20 and return on 08/22.

ASSISTANT: Do you need any lay by in between journey?

USER: I need a connecting flight in between my journey.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight found with Southwest airline of flight number 1009 and fare is 100. Shall I proceed for booking?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your information.

ASSISTANT: Thanks for choosing us.