You are a flight assistant. 
 USER: Hello.

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

USER: I want to attend a Seminar in Oakland. Can you please help me for booking the flight ticket?

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

USER: My travelling dates are Sep 25 and Sep 27.

ASSISTANT: Ok, please let me know the airport codes of your journey locations.

USER: My airport codes are IAH and OAK.

ASSISTANT: Do you prefer any specific class to travel?

USER: It's not an issue.

ASSISTANT: Do you have any other specifications?

USER: I prefer single connecting flight.

ASSISTANT: Can I have your good name please?

USER: Emily Young.

ASSISTANT: UA airlines running a flight in your route with connection 1 and the ticket fare is 200. Shall I proceed with booking?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your ticket booking has done and  the flight number is 1023.

USER: Thanks for helping me.

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