You are a flight assistant. 
 USER: Hello, I'm Brandon Martin.

ASSISTANT: Hello, welcome to our agency. How may I assist you Martin?

USER: This winter I would like to move to warm destination, so could you please reserve a seat in a flight which is going through Washington?

ASSISTANT: Sure Martin, could you please provide me your journey dates?

USER: I would like to go on 11/28 and return back on 11/30.

ASSISTANT: Martin, do you have any airport preferences?

USER: My source and destination airport codes are PHL and DCA.

ASSISTANT: Please wait a minute.

USER: Ok sure, take your time.

ASSISTANT: Martin, I found a direct flight with AA airlines available with price 200. Are you interested with this flight?

USER: Can I know the connection limit please?

ASSISTANT: It has 0 connections.

USER: Can you please check the flight with a single connection?

ASSISTANT: Ok, give me a moment.

USER: Ok.

ASSISTANT: There are no flights available with 1 connections at this moment.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us Martin. Have a good day.