You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am looking for a flight from HOU to EWR, can you please help me in booking?

ASSISTANT: Sure, could you please help me with your scheduled travel dates?

USER: My travelling dates are Mar 16 and mar 18.

ASSISTANT: Which class do you prefer?

USER: I prefer business class.

ASSISTANT: May I know your airline preference?

USER: I am fine with any airline.

ASSISTANT: Can you let me know your connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your full name, please?

USER: Sure, my name is Catherine Green.

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

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.