You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to attend food festival at OAK. Can you help me in booking from SFO?

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

USER: My travelling dates are from Jan 4 to Jan 6.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirement that you are looking for?

USER: My depart time is evening.

ASSISTANT: May I know your name to proceed further?

USER: My name is Elizabeth Thompson.

ASSISTANT: Do you have airline preference?

USER: I prefer normal-cost airline.

ASSISTANT: Elizabeth Thompson, I am sorry to inform you that there is no flight available at your request.

USER: Ok, No issues. Thank you.

ASSISTANT: You are welcome.