You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Jacob Lopez here. I would like to book a ticket from BOS to AUS to meet my niece, can you help me in booking the ticket?

ASSISTANT: Can you please let me know your preferred planned dates to search a flight?

USER: I want to travel on 08/16 and back on 08/18.

ASSISTANT: Do you have any requirements?

USER: I need a connecting flight.

ASSISTANT: Sorry to say, no flight is available for you on those dates.

USER: Ok, no problem. Thank you for checking.

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