You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Karen Lopez.

ASSISTANT: How can I aid you at this moment?

USER: Can you please book a flight ticket from LAS to DCA?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please mention your travel dates for booking flight ticket?

USER: Sure, I need to travel on dates of 07/01 and 07/03.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Sure, take your time.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by Delta airlines. Shall I proceed with this?

USER: That is fine, please proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1024.

USER: Thank you for your help.

ASSISTANT: You are welcome.