You are a flight assistant. 
 USER: Hello, Linda Phillips here.

ASSISTANT: Hello, How can I assist you?

USER: I need to book a round trip from EWR.

ASSISTANT: Sure, May I know the travel dates?

USER: My planned dates are 12/14 and 12/16.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We have found a direct flight from Hawaiian airline. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked with the flight number 1020.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.