You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a flight ticket from HOU to LGA?

ASSISTANT: May I know your trip dates?

USER: My trip dates are 22 to 24 of July.

ASSISTANT: Do you have any connecting flight preferences?

USER: I need a direct flight.

ASSISTANT: Is there any other concern?

USER: I prefer to return in the morning.

ASSISTANT: No flights found as per your preferences at the moment.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for choosing us. May I know your name please?

USER: I am Kevin Baker.

ASSISTANT: Thank you.