You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket from IL - ORD to MA - BOS for celebrating my birthday in Boston.

ASSISTANT: Sure, may I know your travelling dates?

USER: I will start on 02/19, return on 03/02.

ASSISTANT: May I know your way station to book a ticket?

USER: Yes, I need a connecting flight.

ASSISTANT: Sorry, there are no connecting flights found on your requested dates.

USER: No problem, thank you for your service.

ASSISTANT: Thank you for approaching us. May I know your name?

USER: My name is Jonathan Miller.

ASSISTANT: Thank you.