You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Helen Garcia.

ASSISTANT: How can I support you Helen?

USER:  Can you help me to book a flight with 1000 price limit?

ASSISTANT: Sure, please mention your airport codes.

USER: I am departing on 03/02 and return on 03/04. My departure from ORD and land in IAH airport.

ASSISTANT: Please wait for  a moment.

USER: Sure.

ASSISTANT: I found a direct flight for you on your route, shall I book?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked in 1003 flight with JetBlue airlines.

USER: Thank you for your help.