You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you.

USER: I want to book a flight ticket from DEN to DFW.

ASSISTANT: Can I know your name please?

USER: My name is Rebecca Harris.

ASSISTANT: May I know your travel dates please?

USER: My preferable dates are 07/26 and 07/28.

ASSISTANT: OK, please wait a moment.

USER: OK.

ASSISTANT: I found a flight for you with single connection and price 300. Shall I book it?

USER: Yes, please proceed with booking.

ASSISTANT: I have booked a ticket for you with flight number 1018 and airline is Frontier.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have safe journey.