You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from San Francisco, CA-SFO to meet my old friend to start a new business at Orlando, FL-MCO, can you help me in booking?

ASSISTANT: Sure, I am here to help you. May I know your price limit please?

USER: I need the ticket with in the fare limit 500.

ASSISTANT: Ok, may I know your travelling dates please?

USER: I will depart on 04/08 and I intend to return on 04/10.

ASSISTANT: Ok. may I know your name please?

USER: Steven Robinson.

ASSISTANT: Sorry to say no flights found with your details.

USER: That's ok, thanks for your information.

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