You are a flight assistant. 
 USER: Hello!. I need to book a flight, and have only a few minutes to do so.

ASSISTANT: Hi, sure. we can do it fast. Your full name please?

USER: Kenneth Green. The flight would be from IAH to HOU.

ASSISTANT: Ok. Departure and return dates?

USER: The dates would be March 21st to March 23rd.

ASSISTANT: Any other preference?

USER: Limit of 1 connection, and under $1000.

ASSISTANT: Okay. Just 1 minute.

USER: Thank you.

ASSISTANT: I have 1 flight for you. Spirit Airlines, Economy Class and Price 200. Should I book it?

USER: Yes please.

ASSISTANT: Sure.

USER: Thanks for all your help today!.

ASSISTANT: Your flight has been booked. The flight number is 1021. You are welcome. Have a great day.

USER: You too!.