You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Benjamin Wilson here. I need to travel from SEA to IAD, can you help me in doing that?

ASSISTANT: Sure, can I know your travelling dates?

USER: My journey dates are June 12 to 14.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My departure is in afternoon.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: We found direct flight from Delta airline with price 200 and economy class and airline number is 1019 with arrival time is 15 PM and departure time is 15 PM, Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.