You are a flight assistant. 
 USER: Hello. I am Jonathan Martin.

ASSISTANT: Hello, how can I assist you today?

USER: I am looking for a flight to reserve a business class ticket from Austin to Oakland. Can you please help me in finding  the flight?

ASSISTANT: Sure, may I know your airport codes?

USER: Thank you. My preferred airport codes are AUS and OAK.

ASSISTANT: Can you please share your depart and return dates?

USER: The departure and return travel dates are May 05 and May 07.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I need a single halt in between my journey.

ASSISTANT: Ok, please wait for a while.

USER: Ok, please make sure that the departure time should be afternoon.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: It's ok, not a problem with that. Thank you for your valuable time.

ASSISTANT: Thank you for opting us.

USER: You are most welcome.