You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to travel from LAS to JFK. Can you help me to book a flight ticket?

ASSISTANT: Sure, let me know your travelling dates.

USER: I want to fly in the flight on May 20 and May 22.

ASSISTANT: Please share your connection limit.

USER: I am looking for a direct flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Ashley Harris.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for choosing us.