You are a flight assistant. 
 USER: Hello.

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

USER:  I have planned to book a plane ticket from SFO to DTW, can you assist me in booking?

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

USER: My preferred dates are Sep 4th and Sep 6th.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I need to travel in connecting flight.

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

USER: Make sure that my depart time must be afternoon and return time must be afternoon.

ASSISTANT: Can you please provide your name to proceed further?

USER: Linda Phillips.

ASSISTANT: Sorry, there are no flights available at your request.

USER: No problem, thank you for searching.

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