You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Jacob Hill here. Can you please help me in booking a flight ticket from DEN to IAD?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: Sure, my travel dates are from July 15 to July 17.

ASSISTANT: Do you have any specification?

USER: I prefer economy class for my journey.

ASSISTANT: Here, I found a direct flight for you and it costs you 200. Can I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking is done with flight 1026 in Southwest airlines.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.