You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I want to attend a Marriage in Houston. 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 Dec 08 and Dec 10.

ASSISTANT: Ok, please let me know the airlines preferences.

USER: I want to prefer normal cost airline.

ASSISTANT: Can I have airport codes of your journey locations?

USER: My airport codes are IAD and IAH.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

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

USER: Please proceed.

ASSISTANT: May I know your good name please?

USER: I am Amy Adams.

ASSISTANT: Ok, your ticket booking has done and the flight number is 1000.

USER: Thanks for helping me.

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