You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket from HOU to LGA. Could you help me in booking?

ASSISTANT: Is there any connection limit?

USER: I prefer for connecting flight.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are from Nov 29 - Dec 01.

ASSISTANT: Do you have any preference?

USER: No.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Let me know your name.

USER: Eric Taylor.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: That's ok, thank you.

ASSISTANT: Thank you.