You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I get your attention?

USER: I am Raymond Nelson. Please book a direct flight from Houston, TX-IAH to Orlando, FL-MCO.

ASSISTANT: Ok, When did you plan to travel on?

USER: Return by 07/10 and departure on 07/08.

ASSISTANT: Thanks for the details, please hold on for a minute.

USER: Sure.

ASSISTANT: We hardly tried to provide you flight, unfortunately no flights are available for your journey.

USER: Thanks.