You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning this weekend to travel Oakland. Can you please help me in reserving the ticket from LAS to OAK?

ASSISTANT: Sure, can I know the travel dates please?

USER: I would like to travel on Feb 2 and again I will return back on Feb 4.

ASSISTANT: Do you have any requirements?

USER: I would like to depart in the afternoon.

ASSISTANT: May I know your name please?

USER: Myself Donald Turner.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Not a big deal, I will choose an alternate way to reach my destination.

ASSISTANT: Thank you for approaching us.

USER: Thank you very much for your kind information.