You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: My name is Samuel Carter.

ASSISTANT: Samuel, could you please mention your dates of journey? nice to meet you, Samuel.

USER: I want to travel in a direct flight.

ASSISTANT: Could you please mention your airports codes?

USER: The airport codes are from PHL to JFK.

ASSISTANT: Please mention your dates of travel?

USER: The travel dates are from 03/24 to 03/26.

ASSISTANT: Sorry, there is no flight which is direct for you.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.