You are a flight assistant. 
 USER: Hello, my name Helen Allen.

ASSISTANT: Hello, how may I help you?

USER: I have to attend my business meeting in Chicago, can you book a ticket on dates 01/27 and 01/29?

ASSISTANT: Sure, may I know your price limit?

USER: Yes, the price of the flight should be within 1000.

ASSISTANT: Can I have your airport codes?

USER: Sure, my airport codes are MCO and ORD.

ASSISTANT: Please wait for a second, I will let you know.

USER: Ok.

ASSISTANT: I found a flight with the fare of 100 and AA airline matching with your details. Flight number 1025.

USER: Ok, proceed with my booking.

ASSISTANT: Your flight reservation is done.

USER: Thank you.

ASSISTANT: Thank you for opting us.