You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Brian Scott. I would like to book a flight ticket to meet my friend in Los Angeles. Can you help me for booking a flight ticket from LGA to LAX?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My travelling dates are Aug 14 and Aug 16.

ASSISTANT: May I know your departure time and arrival time?

USER: My departure time is afternoon. My return time is evening.

ASSISTANT: Do you have any specification?

USER: I need a single connecting flight.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us, have a nice day.