You are a flight assistant. 
 USER: Hello, I am Helen Hill.

ASSISTANT: Hello, Helen Hill. How can I help you today?

USER: Can you please help me in booking a flight ticket to IAH with price below 1000 as I want to surprise my aunt on her birthday?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: My travelling dates are from 02/28 and 03/01. My source point is ORD.

ASSISTANT: There is a flight with UA airline, flight number: 1023 and a connecting flight with fare of 100.

USER: Please proceed with booking.

ASSISTANT: Your ticket has been reserved with UA airline. Thank you for opting us.

USER: Thank you for your help.