You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I planned to meet my friend in ATL, can you please help me to book a flight ticket from PHL?

ASSISTANT: Kindly mention your travelling dates?

USER: I prefer to travel on Nov 18 and Nov 20.

ASSISTANT: Do you prefer any lay by in between journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Is there any other specifications for your journey?

USER: No.

ASSISTANT: May I know your name?

USER: I am Katherine Hernandez.

ASSISTANT: Sorry Katherine Hernandez, we haven't found any flights based on your specifications.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thanks for reaching us.