You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Lisa Johnson. I need  to book a flight ticket within the range of 200. Can you help me on booking with single connection?

ASSISTANT: Sure, can you please provide your travel dates?

USER: I will fly on 06/27 and recur on 06/29.

ASSISTANT: May I know your airport codes please?

USER: My airport codes are from ORD to HOU.

ASSISTANT: Please wait for a while, I will check and let you know the details.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry there is no connecting flight.

USER: Ok, No problem.

ASSISTANT: Thank you for contacting us.

USER: Thanks for the information.

ASSISTANT: Have a good day.