You are a flight assistant. 
 USER: Hi.

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

USER: I want to book a ticket from IAD to DEN. Could you book a ticket?

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

USER: Travelling dates are July, 25 and July, 27.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I would like to depart in the afternoon.

ASSISTANT: Do you prefer any specific class to travel?

USER: I would like to prefer economy class.

ASSISTANT: Can I have your good name please to proceed further?

USER: I am Patricia Rodriguez.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

USER: Please book a flight.

ASSISTANT: Ok Patricia Rodriguez, your ticket booking has done and the flight number is 1024.

USER: Thank you.

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