You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I'm Scott Lee here. I would like to visit college university at Houston, can you please help me to book a ticket from IL-ORD to TX-HOU?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates?

USER: My departure date is 03/20 and return date is 03/22.

ASSISTANT: Please allow me a moment while I check for the availability of flight.

USER: Sure, but make sure that price is 200.

ASSISTANT: Sure. Scott, there is a flight available at your request with AA airlines and the price is 100 with 1 connection.Would you like me to proceed the booking?

USER: Ok, please proceed with this flight.

ASSISTANT: Your booking is confirmed with 1015 flight number.

USER: Thank you for your assistance in booking a ticket.

ASSISTANT: You are welcome. Thank you for choosing our service, have a great journey.