You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: I want to attend mechanical workshop, can you please book the ticket from JFK to LAX?

ASSISTANT: Sure, do you need a way station in between your journey?

USER: Yes, I prefer single connected flight to travel.

ASSISTANT: Could you please help me with your journey dates?

USER: I would like to depart from my source location on 4th March and I want to return back by 6th March.

ASSISTANT: Are there any more specifications?

USER: I want to depart in the evening time.

ASSISTANT: May I know your good name to proceed further?

USER: My name is Mary Carter.

ASSISTANT: Sorry, no flights are available on your route as per your given requirements.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for opting us.