You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Parker.

ASSISTANT: How may I help you?

USER: I am planning a round trip from Chicago, can you please book me a ticket from ORD to ORD?

ASSISTANT: May I know your travel dates?

USER: My preferable journey dates are from 10/31 to 11/02.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 200 with flight number 1001. Shall I proceed with this flight?

USER: That's perfect! Please reserve my ticket with this airlines.

ASSISTANT: Your booking is done.

USER: Thank you for booking my ticket.

ASSISTANT: Most welcome.