You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking my flight ticket from OAK to PHX?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: Thank you and my travelling dates are from 05/13 to 05/15.

ASSISTANT: Ok, please mention your name.

USER: Myself Steven Hill.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any specification?

USER: My return time will be in the afternoon.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: It's ok, thank you for your help.

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