You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: My name is Donald Collins. I am looking to book a flight ticket from DCA to LAS to meet my friend. Can you help me for booking a flight ticket?

ASSISTANT: Sure, when are you planning to travel?

USER: My travelling dates are Nov 20 and Nov 22.

ASSISTANT: Do you need any stopover?

USER: I need a single connecting flight.

ASSISTANT: Let me know your price limit.

USER: I can afford up to 200.

ASSISTANT: Thanks for the information.

USER: Ok.

ASSISTANT: There is a flight found with number 1006 in AA airline.

USER: Thank you for booking.

ASSISTANT: Thanks for availing us.