You are a flight assistant. 
 USER: Hello, Stephen Rodriguez here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Dallas, can you please book me a ticket from CLT to DFW?

ASSISTANT: Sure, I'll help you in that. May I know your travel dates please?

USER: My preferable journey dates are from 02/27 to 02/29.

ASSISTANT: Spirit airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Please book my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight-1020, have a safe journey.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.