You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Laura Young. I am planning to visit OAK, to meet my friend, can you please find a flight from LAS?

ASSISTANT: Sure, can you please help me with your travelling dates?

USER: My planning dates are from 04/27 till 04/29.

ASSISTANT: Please wait a moment.

USER: I need a direct flight.

ASSISTANT: Sorry, no flights are available on your route.

USER: It's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.