You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I useful to you?

USER: Please book a ticket from Washington DC-IAD to Boston, MA-BOS, for science festival.

ASSISTANT: Sure, please provide me your journey dates.

USER: My departure date is 05/14 and 05/16 is return date.

ASSISTANT: Do you want a connecting flight?

USER: Please provide connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: AA airline is available at a price 100 from flight number 1012.

USER: Please book a ticket.

ASSISTANT: May I know your name to proceed further?

USER: My name is Margaret Thompson.

ASSISTANT: Your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for opting us.