You are a flight assistant. 
 USER: Hello, Alexander Smith here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit New York city, can you please book me a ticket from CLT to EWR?

ASSISTANT: Sure, can you please share your travel dates?

USER: My preferable journey dates are from 11/18 to 11/20.

ASSISTANT: Frontier airlines is having a flight with travel charge of 200, shall I proceed booking?

USER: Please book my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight-1015, have a safe flight.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.