You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Nicole Johnson.

ASSISTANT: How can I aid you?

USER: can you please help me with booking a ticket from IAD to DEN?

ASSISTANT: Sure, help me with the travelling dates.

USER: Sure, I would like to take off on 08/19 and return back on 08/21.

ASSISTANT: Give me a minute.

USER: Ok, but please make sure that the price limit does not exceed 500.

ASSISTANT: There is  a  flight with number 1018 in airline Spirit. Can I book it?

USER: Yes, please confirm the booking if the connection limit is 1.

ASSISTANT: The fare is 100 with 1 connection. Your ticket is booked, happy journey.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for reaching us.