You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Patrick Campbell here.

ASSISTANT: What can I do for you now?

USER: We friends have planned to meet after a long time at New York, could you help me in booking a ticket from IAD to EWR?

ASSISTANT: Ok. Can I know your journey dates?

USER: Sure, my preferable dates are 05/11 and 05/13.

ASSISTANT: Any preferences?

USER: Yes, I can pay up to 500. I would like to travel with a halt.

ASSISTANT: Thanks for your time. There is a flight with 1 connection of price 100 in Frontier airline. May I reserve it?

USER: Perfect, go ahead with the booking.

ASSISTANT: Your ticket was booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us, have a safe journey.