You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Can you please book me the ticket from DCA to LAS?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: I want to depart on Dec 24 and would like to return on Dec 26.

ASSISTANT: Please provide your name for further process.

USER: My name is Scott Smith.

ASSISTANT: I have found a flight with 1 connecting flight having a ticket fare of 100 which is provided by UA airlines in an economy class. Shall I proceed with the booking?

USER: That's ok for me. Please book my ticket with this airlines.

ASSISTANT: I have booked your flight ticket successfully with the flight 1020 with your name.

USER: Thank you for booking my ticket.

ASSISTANT: You are welcome, thank you for employing our service. Have a safe journey.