You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your helping hand?

USER: I want to travel from DEN to IAD. Can you help me to book a flight ticket?

ASSISTANT: Sure, help me with the trip dates?

USER: I want to travel in the flight on May 09 and May 11.

ASSISTANT: May I know your good name please?

USER: Nicole Taylor.

ASSISTANT: Do you have any specifications to be met?

USER: I am looking for a connecting flight.

ASSISTANT: We found a flight in an airline Delta with 1012 number having a single connection price of 100. Shall I proceed to book?

USER: Proceed to booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us. Have a safe flight.