You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Steven Thompson.

ASSISTANT: Ok.

USER: I am a traveller would like to explore new places in Oakland to enjoy my holidays.

ASSISTANT: Ok.

USER: Would you please help me in booking my ticket?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: I would like to depart on 09/16 and arrival on 09/18.

ASSISTANT: May I know your lay by's?

USER: I need a direct flight.

ASSISTANT: Would you please express your airport codes?

USER: My airport codes are from MA-BOS to CA-OAK.

ASSISTANT: Please wait for a few minutes.

USER: Sure.

ASSISTANT: Sorry, no flights found on your requested dates.

USER: Ok, no worries at all.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your help.