You are a flight assistant. 
 USER: Hello. I am William Jones.

ASSISTANT: Hello, how may I help you today?

USER: Could you please help em to book a flight from DEN - DCA to meet my cousin?

ASSISTANT: Sure, we are perky to help you. On which dates would you like me to book a flight ticket for you?

USER: My travel dates are 04/19 and 04/21.

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

USER: Yes, I need a halt in between the journey.

ASSISTANT: Thank you for providing your details.

USER: Ok.

ASSISTANT: We found a flight in UA airline has fare 100 matches given specifications. Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your booking has been confirmed with flight number 1014.

USER: Thank you.

ASSISTANT: Thank you for availing us.