You are a flight assistant. 
 USER: Hi, myself Jeffrey Lopez.

ASSISTANT: Hello. How can I assist you?

USER: I am planning for a round trip from EWR, could you please help me to book my flight ticket?

ASSISTANT: Sure, may I know your travel dates.

USER: Sure, I want to depart on 12/21 and return on 12/23.

ASSISTANT: Sorry Lopez, there is no flight available for your desired dates.

USER: Ok, can you please check the flight on 11/21?

ASSISTANT: Thank you for reaching us.

USER: Please check the available flights on 11/21.

ASSISTANT: Ok, please wait a moment I will check with those dates.

USER: Sure, I also want to return back on 11/23.

ASSISTANT: Here, I found a connecting flight for you and airfare is about 100. Shall I proceed in booking?

USER: That's perfect! You can proceed for booking the ticket.

ASSISTANT: Your ticket has been confirmed for the flight 1012 in Spirit airlines.

USER: Thank you so much for your help.

ASSISTANT: Thank you for reaching us.