You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am looking for a flight from LAS to PHL, can you help me in booking?

ASSISTANT: May I know on which dates you are willing to travel?

USER: Sure, my planned travel dates are Sept 27 and Sept 29.

ASSISTANT: Do you require any stopovers in your journey?

USER: Please look for a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No, thank you.

ASSISTANT: May I know your name?

USER: Myself Nancy Mitchell.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you.