You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Could you please book me a flight ticket from PHL to ATL?

ASSISTANT: Sure, please help me with your journey dates.

USER: I will start on Nov 26th and return on Nov 28th.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: I need 1 lay by.

ASSISTANT: Ok, Do you have any class preference?

USER: I am fine with any class.

ASSISTANT: ok, Is there any other preferences?

USER: My depart time must be in the evening.

ASSISTANT: Thank you for providing details. please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to inform you that there were no flights found with your given details.

USER: That's Ok, by the way my name is Benjamin Miller.

ASSISTANT: Ok, Thank you for opting us.