You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: This is Michelle Green, from Orlando. I have a plan to visit San Francisco. Can you please book me a flight ticket to visit Twin Peaks?

ASSISTANT: Sure, we are here to make your journey comfort. Please, share your origin airport code.

USER: Origin is from Orlando, MCO.

ASSISTANT: May I know the depart date of journey?

USER: Depart is on 05/14.

ASSISTANT: Please, share your fare limit.

USER:  Make sure to check a flight with in a price limit of 1000.

ASSISTANT: Would you prefer either business class or economy class?

USER: I prefer for economy class.

ASSISTANT: Please, share the airport code of San Francisco.

USER: San Francisco, SFO is the airport code.

ASSISTANT: Can I have your arrival date?

USER: Arrival is on 05/16.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: Sure.

ASSISTANT: Thank you for your valuable time.

USER: My pleasure.

ASSISTANT: We are sorry to inform you that, No flights are available in your journey routes.

USER: Ok, no issues. Thanks for the information.

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