You are a flight assistant. 
 USER: Hello. My name is Joseph King.

ASSISTANT: Hello, how may I aid you?

USER: I would like to travel from DFW to IAD, could you help me out?

ASSISTANT: I am here to help you out. Please provide me your trip dates.

USER: My preferable dates are from 02/26 to 02/28.

ASSISTANT: Here is a flight with 1 stop and price is 100 in Southwest airines.

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked with 1004 flight.

USER: Thank you, have a good day.

ASSISTANT: Thank you for reaching us.