You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you please help me in booking a flight ticket to LAS from HOU?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: My travel dates are from Dec 14 to Dec 16.

ASSISTANT: Do you have any connection limit preference?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other specifications for this trip?

USER: I would like to depart in the afternoon.

ASSISTANT: May I know your name to proceed further?

USER: I am Samantha King.

ASSISTANT: Samantha King, there are no flight services available on this route with your preferences.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.