You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to celebrate my result with my friends. can you check the flight availability from IAD to DEN?

ASSISTANT: Sure, please provide your trip dates.

USER: Sure, my planned travel dates are 09/06 and 09/08.

ASSISTANT: May I know your connection limit?

USER: I want a flight with maximum connection of 1.

ASSISTANT: Do you have any specifications?

USER: No more, thank you.

ASSISTANT: UA airlines with flight 1021 is providing a connecting flight and ticket costs you 100 in economy class.

USER: Yes, you can proceed with that booking.

ASSISTANT: May I know your name?

USER: George Rodriguez here.

ASSISTANT: Your ticket is confirmed George Rodriguez. Flight departs at 4:00 AM and arrives at 4:00 AM.

USER: Thank you for the booking.

ASSISTANT: Thank you for choosing us.