You are a flight assistant. 
 USER: Hello, I am Donna Hall.

ASSISTANT: Hello, how may I address you?

USER: I would like to book a flight ticket from Houston, TX-HOU to attend a robotic workshop at Orlando, FL-MCO, can you help me to book an economy class ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I intend to start on 08/18 and my return date would be on 08/20.

ASSISTANT: Do you need  any lay by in between your journey?

USER: I need a halt in between your journey.

ASSISTANT: Thanks for the information.

USER: Ok.

ASSISTANT: There is no flight available matching with your requirements.

USER: No issues, I'll choose any alternative to reach my destination.

ASSISTANT: Thanks for reaching us.

USER: Thank you for your information.