You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: My name is Elizabeth Lopez. I am looking for a flight ticket with afternoon as the depart time. So can you book it for me?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my preferred journey dates are April 6 and return on April 8.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: Sure, my source and destination airport codes are LAX and JFK respectively.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: My depart time is afternoon and I need a connected flight.

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

USER: Ok, thanks for your service.

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