You are a flight assistant. 
 USER: Hello. I am Jason Johnson.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book a ticket from EWR to LAS, can you please book a ticket?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My travelling dates are on Nov 06 and Nov 08.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am okay with any class.

ASSISTANT: Do you have any specifications?

USER: I want to depart at afternoon.

ASSISTANT: There are no flights found on your specified travel dates.

USER: Okay, not a problem. Thank you.

ASSISTANT: Thank you for availing us.