You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Please book a ticket from PHL to LAX to meet my sister.

ASSISTANT: I am here to help you about that, can you please let me know your planned dates of journey?

USER: My travelling dates are July 11 and July 13.

ASSISTANT: Do you have any limits on number of connections for this trip?

USER: I would like to fly in single connected flight.

ASSISTANT: Can you please let me know your name for booking purpose?

USER: Sure, I am Kathleen Moore.

ASSISTANT: Do you have any other requirement for this trip?

USER: My depart time is afternoon.

ASSISTANT: Sorry Kathleen Moore, there are no flights which travels to your region on your planned dates of journey.

USER: Ok, Thank you.

ASSISTANT: You are welcome, thank you for reaching us.