You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you in this moment?

USER: I am looking for a flight from IAD to BOS, can you please help me in booking?

ASSISTANT: Sure, please share me your travel dates?

USER: My travelling dates are Sept 22 and Sept 24.

ASSISTANT: Ok, may I know your name please?

USER: Sure, my name is Deborah Green.

ASSISTANT: Ok, do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: Ok, any other specifications do you have?

USER: I need a connecting flight.

ASSISTANT: Sure, any airline preference do you have?

USER: I don't have any airline preference.

ASSISTANT: Ok, please be online a moment.

USER: Sure.

ASSISTANT: American Airlines is providing an economy class flight with single connection at a price of 100. Should I proceed?

USER: Please proceed.

ASSISTANT: Ok, your flight ticket has been successfully booked with flight number 1003.

USER: Thank you for the service.

ASSISTANT: Thanks for contacting us.