You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am looking for a flight from IAD to DEN, can you please help me in booking?

ASSISTANT: Sure, I'm glad to help you with that. May I know your planned travel dates please?

USER: I will start my journey on Mar 25 and return back on Mar 07.

ASSISTANT: Do you need break in between your journey?

USER: I need a break in between my journey.

ASSISTANT: Can you please recheck your travel dates?

USER: Sorry, my return date is Mar 27.

ASSISTANT: Please let me know if you have any other specifications.

USER: I prefer economy class.

ASSISTANT: May I know your good name please?

USER: My name is Jonathan Lopez.

ASSISTANT: Southwest airlines is providing a single connected flight with ticket fare of 100, shall I proceed for booking?

USER: Please proceed.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1020, have a safe journey.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.