You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Donna Baker.

ASSISTANT: How may I help you?

USER: I want to visit Willis Tower at Chicago, ORD. Can you help me in booking a flight with a connecting flight?

ASSISTANT: Sure. Please provide your travel dates in order to book a connecting flight.

USER: My travelling dates are from 09/23 to 09/25.

ASSISTANT: Please specify boarding airport code?

USER: I am boarding at Boston, BOS.

ASSISTANT: Ticket is available with flight number 1022, airline is UA, for price 100.

USER: Ok, You can proceed.

ASSISTANT: Connecting flight is booked.

USER: Thanks for your support.

ASSISTANT: Thanks.