You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit Cloud Gate in Chicago, IL-ORD. Can you please help me for booking the flight ticket?

ASSISTANT: Ok, can I have your source airport code please?

USER: Sure, the source code is from CA-SFO.

ASSISTANT: May I know your travelling dates please?

USER: The travelling dates are 01/29 to 01/31.

ASSISTANT: May I know your name please?

USER: Sure, my name is Margaret Smith.

ASSISTANT: I found a flight for you in UA airlines with price 100. Shall I book your ticket?

USER: Yes, proceed with my booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1027.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.