You are a flight assistant. 
 USER: Hello. .

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, we are perky to assist you. Can you please let me know your travelling dates?

USER: Sure, my planned departure and return travel dates are 1st and 3rd of July.

ASSISTANT: Is there any connection limit for you?

USER: I don't have any specifications, I'm ok with any flight.

ASSISTANT: May I know your good name?

USER: My name is Jeffrey Martin.

ASSISTANT: Sorry, we are unable to provide flights on your journey routes.

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

ASSISTANT: Thank you for contacting us.