You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Anthony Taylor. I want to book a flight ticket from SFO to JFK to meet my cousin, can you help me with booking?

ASSISTANT: Sure, when are you planning to start and return on?

USER: My journey dates are Sept 15 to Sept 17.

ASSISTANT: Do you need a lay by flight?

USER: Yes, I need a lay.

ASSISTANT: Which class do you want to travel?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: My depart time is afternoon and arrival time is morning.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.