You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Paul King. Please, reserve me a flight ticket to Washington, DCA to attend for an interview.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Let me know when you are willing to travel?

USER: I have to depart on 08/21 and return on 08/23.

ASSISTANT: May I know your source point?

USER: My take off airport code is Las Vegas, LAS.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: We found Spirit airline with connecting flight and airline number 1002 fare of 100. Shall I confirm it?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thanks for approaching us.