You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: My name is Dorothy Thompson. I would like to visit to Los Angeles to see all the attractions, can you please help me to book a flight from Washington?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I will travel on Sept 29 and Oct 1st.

ASSISTANT: Can I know your airport codes too?

USER: Sure, I will travel from IAD to LAX.

ASSISTANT: Do you need any specifications?

USER: I want to return back in the afternoon.

ASSISTANT: Can I know your preferences?

USER: Please book a flight with max one connecting flight.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Please proceed.

ASSISTANT: Please wait a moment. You have preferred for afternoon flight in the return?

USER: Yes.

ASSISTANT: Sorry, there are no flights found on this requirement.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.