You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Will you help me in booking the flight ticket from SFO to IAD?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are June 18 and June 20.

ASSISTANT: Do you have any preferences for this trip?

USER: I need a flight with single connection.

ASSISTANT: May I know your name please?

USER: Myself Stephanie Evans.

ASSISTANT: We found a flight in an airline Southwest with 1001 number having a single connection in an economy class. Shall I proceed to book?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.