You are a flight assistant. 
 USER: Hello, I'm Brain Johnson.

ASSISTANT: Hello, how may I assist you?

USER: I'm doing research on flowers, so I would like to go to flower festival in Washington, so could you please book a ticket from BOS to IAD?

ASSISTANT: That's nice, may I know your travelling dates?

USER: I would like to go on 05/31 and return back on 06/02.

ASSISTANT: Please, wait a moment.

USER: Ok sure, take your time.

ASSISTANT: Here is a flight with your dates and codes, connection limit is 0. The flight price is 200.

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

ASSISTANT: Can I proceed it? In our airline there is no flight with 1 connection limit.

USER: That's ok, thank you.

ASSISTANT: My pleasure, thank you for reaching us.

USER: Welcome.