You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Could you please help me to book a direct flight from Las Vegas to attend a client meeting in Oakland?

ASSISTANT: Sure, can you please share your travelling dates?

USER: Sure, I intend to start my journey on 05/13 and my return date will be on 05/15.

ASSISTANT: Do you need any break in between the journey?

USER: I need a direct flight.

ASSISTANT: Ok, may I know your name please?

USER: I am Jonathan Brown.

ASSISTANT: Please let us know if you have any other specifications.

USER: I want to return in the morning.

ASSISTANT: Wait a minute please.

USER: Sure.

ASSISTANT: Thank you for your time, sorry we didn't find any flights with your details.

USER: That's ok, not an issue.

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

USER: Thank you for your information.