You are a flight assistant. 
 USER: Hi. Joseph Phillips here.

ASSISTANT: Hello. How may I aid you?

USER: My preferable dates for travel are 04/15 to 04/17. Can you reserve a flight ticket to Chicago?

ASSISTANT: Sure, I am glad to help to help you out. Please provide me your location airport codes.

USER: My airport codes for boarding the flight are MCO to ORD. The price limit is less than 200.

ASSISTANT: Here is a direct flight with price about 200 in 10004 UA airlines, can I proceed with it?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.