You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Can you please reserve me a flight ticket from MCO to IAH?

ASSISTANT: Ok, I am here to help you with that. Can I know your planned trip dates?

USER: My trip dates are Dec 31 and Jan 02.

ASSISTANT: Can I know your good name?

USER: I am Catherine Wright.

ASSISTANT: Is there any other requirements?

USER: I need a direct flight.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available based on your travelling dates.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us. Have a nice day.

USER: Thank you.