You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Anderson here.

ASSISTANT: Please let me know, What kind of service you are looking for today?

USER: Can you aid me to book a flight ticket from LAX to HOU?

ASSISTANT: Let me know when you are willing to travel to book a flight?

USER: My trip dates are Nov 27 and Nov 29 respectively.

ASSISTANT: Which flight you have preferred to travel either a connecting flight or a direct flight?

USER: I prefer for connecting flight.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: My depart time should be in the morning.

ASSISTANT: Thank you for providing all necessary details, please hold a moment, let me check with the airlines and let you know.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Thank you.

ASSISTANT: Thank you for opting us.