You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Please help me to book a flight ticket from HOU to ATL.

ASSISTANT: May I know your travelling dates?

USER: My journey dates are from Apr, 11 to Apr, 13.

ASSISTANT: Can I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Please let me know your specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: Benjamin Anderson.

ASSISTANT: Sorry, no flights available on your route.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.