You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Margaret Nelson.

ASSISTANT: Ok.

USER: I need to attend a investigation on murder case in San Francisco, SFO. Will you help me in booking me a flight on 02/23?

ASSISTANT: Sure, we are here to make your journey comfort.

USER: Thank you.

ASSISTANT: Do you need any halt in you journey?

USER: Yes, I need a flag stop in between my travel.

ASSISTANT: Kindly, mention your return date.

USER: I will come back on 02/25.

ASSISTANT: May I know your origin airport code?

USER: My nearest airport to board is New York, JFK.

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

USER: Sure.

ASSISTANT: Thank you for your valuable time.

USER: Ok.

ASSISTANT: No flights found on your journey dates.

USER: Ok, I will choose other airline. Thank you for best service.

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