You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Please book me a flight ticket from ATL to BOS to meet my family.

ASSISTANT: Sure, can I know your travelling dates?

USER: I have planned to travel on July 12th and return on July 14th.

ASSISTANT: Do you need a connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Do you have a class preference?

USER: No, thank's.

ASSISTANT: We found a flight of southwest airline, flight number 1020 with the fare of 100. Can I proceed for booking?

USER: Ok, please book this ticket.

ASSISTANT: May I know your name?

USER: Myself Melissa Wilson.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.