You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Jessica Turner. I have to attend a Live Concert at San Francisco, could you please help me with booking a flight ticket from OAK to SFO?

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

USER: I would like to take off on 06/12 and return on 06/14.

ASSISTANT: Let me check for the availability of flight.

USER: Sure, take your time.

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

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.