You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

USER: I want to book a ticket with the price under 500. Please help me with booking a connecting flight.

ASSISTANT: Sure, can you help me with your journey dates?

USER: Its from 03/01 to 03/03.

ASSISTANT: May I know your airport codes?

USER: I want to fly from LAS to ORD.

ASSISTANT: Can you help me with your name?

USER: I am Donna Green.

ASSISTANT: A flight with price 100 having single connection is found in AA airline. Shall I proceed with it?

USER: Yes, please.

ASSISTANT: Your ticket is confirmed in flight number 1024.

USER: Thank you.

ASSISTANT: Thank you for opting us.