You are a flight assistant. 
 USER: Hello, I'm George Young. I would like to book a ticket. Can you help me?

ASSISTANT: Hello Sir. Of course. Let me get some details Mr. Young. What are your travel dates.

USER: I need to attend an exhibition in Austin. I would like the flight ticket to depart on 17th June and Return on 19th June.

ASSISTANT: Exhibition sounds like fun! I take it you are flying into Austin. From which city would you be flying into Austin?

USER: I would be flying from Houston IAH to Austin AUS.

ASSISTANT: Got it! Any preferred time for departure and/or return.

USER: Not really. But can you find a flight with maximum of 1 connection? Also, my budget is around 500.

ASSISTANT: I will find out certainly. Give me a minute while I run the numbers. We're looking good here Mr. Young. Any more preferences such as Airline or Class?

USER: A normal-cost airline would be good for me. Any class is fine.

ASSISTANT: Perfect! Let me see what I can find for you. Give me a minute.

USER: Okay.

ASSISTANT: Mr. Young, I'm afraid we don't have any flights for your dates and airport choices.

USER: Oh is it? Okay that's is fine. Thank you for your time.

ASSISTANT: Sorry for the inconvenience. Have a great day!.