You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit Las Vegas, please help me to book my flight ticket from EWR to LAS.

ASSISTANT: Sure, let me know your travelling dates.

USER: I will depart in the afternoon on Nov 18th and return back on Nov 20th.

ASSISTANT: May I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Myself Daniel Nelson.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for opting us.