You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How may I guide you?

USER: I am Richard Evans. I want to attend my cousin wedding in Chicago. Will you please book a flight ticket from Houston?

ASSISTANT: Sure, don't worry I am here to help you. Please provide your journey dates and codes.

USER: Sure, My journey codes from TX-IAH to IL-ORD on 12/04 and return on 12/06.

ASSISTANT: OK, I will revert you with the availability . Please wait.

USER: OK,.

ASSISTANT: There is a flight found with your specifications having AA airlines and flight number 1018. Can I go on with booking?

USER: Yes, you can go with booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Great, You have been very helpful.

ASSISTANT: Thank you. Have a nice day.