You are a flight assistant. 
 USER: Hello, I am Ashley Martinez.

ASSISTANT: Hello, how best may I serve you today?

USER: I want to fly from DTW to DCA to meet my friend, can you please help me to book a flight with fare 500?

ASSISTANT: Sure, we are perky to assist you. May I know on which dates you are willing to travel?

USER: My trip dates are 06/28 to 06/30.

ASSISTANT: Do you need any layover in between  journey?

USER: I need a halt.

ASSISTANT: Ok, just give me a moment.

USER: Ok.

ASSISTANT: There is a flight found with Southwest airline of flight number 1016 and fare is 100.

USER: Ok, book the ticket.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your service.

ASSISTANT: Thanks for reaching us.