You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

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

ASSISTANT: When you are willing to travel?

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

ASSISTANT: Do you have any connection limit?

USER: I prefer single connected flight to travel.

ASSISTANT: May, know your good name?

USER: My name is Kevin Harris.

ASSISTANT: Sorry, we found no flights on your given dates.

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

ASSISTANT: Thank you for reaching us.