You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: My name is Nicholas Young.

ASSISTANT: Nicholas, can I know your preferable dates ?

USER: I would like to visit Houston for my cousin's wedding. My preferable dates are 09/06 and 09/08.

ASSISTANT: Can I know the airport codes?

USER: The airport codes are ORD and HOU.

ASSISTANT: Please hold on for a moment Young.

USER: OK.

ASSISTANT: Do you have any additional requirements?

USER: Yes, my price limit is 200.

ASSISTANT: The flight 1010 of AA airlines has connection limit as 1, would you like me to book the ticket?

USER: May I know the price?

ASSISTANT: The price is 100.

USER: OK, please confirm the ticket.

ASSISTANT: Young, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you, have a safe flight.