You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to attend my business meeting, so please book my ticket from BOS to DCA.

ASSISTANT: Ok, please can I know the dates of your journey?

USER: My itinerary dates are May 3 and May 5.

ASSISTANT: Ok, can I know the name on which I have to book the ticket?

USER: Book the ticket on the name of Jeffrey Campbell.

ASSISTANT: Ok, may I know your specification to proceed?

USER: I prefer to travel in business class.

ASSISTANT: Ok, do you have any other intents?

USER: I want to depart from Boston in the afternoon.

ASSISTANT: Ok, please wait a moment.

USER: I am looking for a connecting flight.

ASSISTANT: Ok, thank you for waiting for my response. Sorry as per your needs there are no flights available to book a ticket.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing our agency.