You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Ruth Thompson. I have planned a small hangout trip with my friends, can you help me with booking a ticket from DCA to LAS?

ASSISTANT: What dates will you be traveling?

USER: My preferable dates are 08/20 to 08/22.

ASSISTANT: Ok, give me a moment.

USER: Sure.

ASSISTANT: There is a flight available with price 200 and flight number is 1008, would you like to proceed with the booking?

USER: Yes, book the ticket for me.

ASSISTANT: Your booking is confirmed with SouthWest airline. Thank you have a nice journey.

USER: That's fine. Thank you for your help.