You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: Can you please help me with booking a flight ticket from DCA to JFK?

ASSISTANT: Sure, On which dates would you like to travel?

USER: My travelling dates are from Oct 13-15.

ASSISTANT: may I know your good name please?

USER: Karen Baker here.

ASSISTANT: Do you need a lay by in between the journey?

USER: I would be comfortable with single stop over.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: We found a Frontier Airlines with fare of 100 and a lay by in between the journey matches your schedule.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1007.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.