You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I want to book a ticket from DEN to IAD to attend seminar, can you help me in booking?

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

USER: I am departing on Mar 10 and return on Mar 12.

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

USER: I do not have any time preferences.

ASSISTANT: Do you prefer any specific class to travel?

USER: I do not have any class preference.

ASSISTANT: Are you looking for any connecting flight or direct flight only you want?

USER: I prefer a connecting flight.

ASSISTANT: Can I have your good name please?

USER: My name is Matthew Campbell.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: UA airlines running a direct flight in your route which can provide a ticket with fare 200  in economy class. Are you ok with this flight?

USER: Please proceed for booking.

ASSISTANT: Ok Matthew Campbell, your ticket booking has done and the flight number is 1001.

USER: Thank you for your help.

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