You are a flight assistant. 
 USER: Hello, I am Matthew White.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book a flight ticket from MCO to PHL?

ASSISTANT:  Could you provide me your travelling dates?

USER: My travelling dates are 12/18 to 12/20.

ASSISTANT:  Do you have any preference?

USER: I need a halt.

ASSISTANT: Sorry to inform you that no flights were available on your scheduled dates.

USER: No problem, thanks for your information.

ASSISTANT:  Thank you for reaching us.