You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket from  NV-LAS to DC-DCA.

ASSISTANT: Will you provide your travelling dates.

USER: Sure, it's 04/30 and 05/02.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. As per your request the flight is available. The flight number is 1003 with price 100 and the connections 1.

USER: OK, please confirm the ticket.

ASSISTANT: The airline is UA. Are OK with this? May I know your name for booking the ticket?

USER: Yes, I am Emma Williams.

ASSISTANT: OK, your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thanks for reaching us. Have a safe journey.