You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

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

USER: My travelling dates are from Aug 19-21.

ASSISTANT: May I know your connection limit?

USER: I would be comfortable with single stop over.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: No, I am comfortable with any flight.

ASSISTANT: May I know your good name?

USER: Melissa Turner here.

ASSISTANT: We found an airline: Hawaiian, flight number: 1018 and price is 100 with one connection.

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.