You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Brandon Miller. I would like to travel from SFO to DEN, could you help me out?

ASSISTANT: Sure, may I know your planned dates please?

USER: My preferable dates are from 08/19 to 08/21.

ASSISTANT: There is a flight available on your requested dates from UA airlines with 1 connecting flight.

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked with flight 1004.

USER: Thank you for your help.

ASSISTANT: Thank you for using our service to fly.