You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Can you help me to book a flight ticket with the name Paul Mitchell to Washington DC-DCA from Houston, TX-HOU to participate in scuba driving?

ASSISTANT: Sure, we are glad to help you. Could I have your journey dates, please?

USER: My plan to start on 02/22 and I will return with in two days that is on 02/24.

ASSISTANT: Do you have any specifications?

USER: I prefer one connection in between my journey.

ASSISTANT: Sorry to say that there is no flights found on your requested dates.

USER: OK, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.