You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from LGA to HOU. Could you book a ticket?

ASSISTANT: Sure, please share your itinerary dates.

USER: Travel dates are June, 6 and June, 8.

ASSISTANT: Which class do you prefer?

USER: I would like to prefer business class.

ASSISTANT: Do you prefer a direct or connecting flight?

USER: I need connecting flight.

ASSISTANT: May I know your name?

USER: My name is Brian Evans.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Sorry Brian Evans, no flights are available as per your requirements.

USER: Thank you.

ASSISTANT: Thank you for reaching us.