You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Hall.

ASSISTANT: How may I assist you?

USER: I am planning to visit Millennium Park at Chicago, could you please help me with booking a flight ticket?

ASSISTANT: Sure, let me know your airport codes please.

USER: My nearest source airport code is SEA and destination airport code is ORD.

ASSISTANT: May I know your travelling dates please?

USER: I would like to take off on 01/27 and return on 01/29.

ASSISTANT: I found a flight for you in Spirit airlines with price 100. Can I proceed?

USER: Please proceed with the booking if the connection limit is 1.

ASSISTANT: Ok, your ticket has been booked with flight number 1008.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.