You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking my flight ticket from LAS to PHL?

ASSISTANT: I am glad to help you. May I know your planned travel dates?

USER: My travelling dates are May 13 and May 15.

ASSISTANT: Do you have any connection limit preference?

USER: I need single connection flight.

ASSISTANT: Could you help me with your name please?

USER: Myself Raymond King.

ASSISTANT: Sorry, there are no flights available for the mentioned dates.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for reaching us.