You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Daniel Nelson here. Actually my friend got married recently at DCA and invited me to lunch from HOU , can you please help me in booking  a ticket?

ASSISTANT: Sure Daniel, can I know the dates of travel please?

USER: My required dates are from 05/22 till 05/24.

ASSISTANT: Give me a moment I will revert back to you.

USER: Ok, I will wait for your information.

ASSISTANT: I found a flight for you with price 100, shall I book it?

USER: May I know the connection limit?

ASSISTANT: The connection limit is 1.

USER: Please check the direct flight for me.

ASSISTANT: Sorry, there are no direct flight on your dates.

USER: It's ok.

ASSISTANT: Thank you for choosing our service.

USER: It's my pleasure.