You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Elizabeth Davis. Can you help me in booking my flight ticket from HOU to MCO?

ASSISTANT: Sure, we are happy to help you. Can you please let me know your travelling dates?

USER: My trip dates will be Sep 21st and Sep 23rd.

ASSISTANT: Do you prefer any lay by in between journey?

USER: Yes, I prefer a lay by flight.

ASSISTANT: May I know your specific depart and arrival timings please?

USER: My time while returning is in the evening.

ASSISTANT: Is there any class preference for you?

USER: I am ok, with any class.

ASSISTANT: Do you have any other specifications to be met?

USER: No.

ASSISTANT: Thanks for providing details, we are sorry to inform you that no flights are available on your journey routes.

USER: Its ok, thank you.

ASSISTANT: Thank you for availing us.