You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I serve you?

USER: I am Janet Anderson, would like to travel a holiday trip to Las Vegas, NV - LAS. Could you help me in booking a ticket?

ASSISTANT: Sure, may I know your travelling dates and origin airport?

USER: My journey dates are 01/11 TO 01/13, Origin is from OAK. And I need with a direct flight.

ASSISTANT: Ok, I will check the availability and revert you in a while.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there were no flights.

USER: Ok, No problem. Thank you.

ASSISTANT: Thank you for reaching us, have a good day.