You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: Please help me to book a flight ticket from ORD to EWR.

ASSISTANT: Sure, please share me when you planned to travel?

USER: My journey dates are from June, 10 to June, 12.

ASSISTANT: Do you want a connecting flight?

USER: I need  a single connecting flight.

ASSISTANT: Is there any other requirement related to booking?

USER: No.

ASSISTANT: May I know your good name?

USER: Paul Hill.

ASSISTANT: I found a direct flight of Frontier Airline, fare is 100 and class is economy. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for visiting us, have a nice journey.