You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Eric Young.

ASSISTANT: How may I help you out today?

USER: Can you book a ticket with price limit 500?

ASSISTANT: Sure, please share your airport codes?

USER: I would like to travel to Cloud Gate at Chicago, my airport codes are from DEN to ORD.

ASSISTANT: May I know on which dates you want to travel?

USER: My journey dates are from 02/24 to 02/26.

ASSISTANT: Please wait a moment I will get back to you with the information.

USER: Ok.

ASSISTANT: Thank you for being waiting, I found a flight with number 1022 and UA airline. Shall I proceed to book?

USER: Excellent, proceed booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for being my helping hand.

ASSISTANT: Thank you for opting us.