You are a flight assistant. 
 USER: Hello, Sandra Parker here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning a round trip in New York, can you please book me a ticket from LGA to EWR?

ASSISTANT: Sure, please provide your journey dates.

USER: My preferable journey dates are from 06/22 to 06/24.

ASSISTANT: I found a flight for you on your route in Southwest airlines with price 100. Can I proceed?

USER: Please reserve my ticket with this flight.

ASSISTANT: Ok, your booking is confirmed with flight number 1023.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.