You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I have to attend an interview in QA software solutions at New York, can you please help me to book a flight ticket from LAS to LGA?

ASSISTANT: Sure, I am here to help you.

USER: Thank you for the response.

ASSISTANT: May I know your travel dates please?

USER: I want to start on Mar 17th and return on Mar 19th.

ASSISTANT: Ok, do you have any specifications?

USER: I prefer a business class flight ticket.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Make sure that, I prefer a flight which has maximum a single connection.

ASSISTANT: May I know your name please?

USER: Myself Samantha Gonzalez.

ASSISTANT: Sorry Samantha Gonzalez, there are no flights available on your requested dates.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.