You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Michael Lopez. I need to book a ticket from ORD to ATL, can you help me?

ASSISTANT: May I know your desired travel dates please?

USER: My travelling dates are Apr 19 to Apr 21.

ASSISTANT: There is a flight with connection limit 1 and fare 200, shall I proceed for booking?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked, flight number 1007 with Frontier airlines.

USER: Thank you.

ASSISTANT: Thank you for opting us.