You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jacob Young.

ASSISTANT: How may I assist you?

USER: I would like to book a ticket from LAS to LAX, can you please help me out?

ASSISTANT: Sure, I am glad to help you with that. May I know travelling dates to proceed further?

USER: I am travelling on these dates 08/11 and 08/13.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry, there are no flights available in your route.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for approaching us.