You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am George Clark here, I would like to visit Boston, can you please help me to book a ticket from ORD to BOS?

ASSISTANT: Sure, may I know your preferable travel dates?

USER: Sure, my dates of journey is from 09/06 to 09/08. Please make sure that the price limit is 500.

ASSISTANT: There is a direct flight available on your requested dates from Jet blue airlines. Shall I confirm your booking?

USER: But, I want a connecting flight.

ASSISTANT: Sorry, there is no flight available on your request.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your service.