You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you help me in booking a flight ticket to OAK from LAS in February month?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Sure, my departure and arrival dates are Feb 27 and Feb 29.

ASSISTANT: Ok, could I have your name please?

USER: Sure, my name is Joshua Rodriguez.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a connecting flight for my journey.

ASSISTANT: Ok, do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: You are welcome, have a great day.