You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Timothy Brown here.

ASSISTANT: Yes, Brown.

USER: I want to travel to Washington to meet my college friend, can you please book a ticket from PHL to IAD?

ASSISTANT: Sure, may I know your travel dates please?

USER: Sure, my preferable dates are from 02/02 to 02/04.

ASSISTANT: Frontier airlines is having a flight with travel charge of 200, is that ok for you?

USER: Please book my ticket.

ASSISTANT: Your ticket has been booked with flight-1000, have a safe flight.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.