You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight ticket from Atlanta, ATL to PHL?

ASSISTANT: May I know your planned travel dates?

USER: My journey dates are from Apr 10 to Apr 12.

ASSISTANT: May I know your connection limit?

USER: I am ok with any connection.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: My return time is afternoon.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, that's not a problem. Thank you.

ASSISTANT: May I know your good name?

USER: My name is Amy Lewis.

ASSISTANT: Thank you for reaching us.