You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kenneth Taylor here.

ASSISTANT: Taylor, how can I help you?

USER: I want to attend my convocation ceremony, could you book my ticket from DCA to ORD?

ASSISTANT: Sure, could you please provide me your travel dates?

USER: My journey dates are 09/24 and 09/26.

ASSISTANT: There is a flight available with Spirit airlines and the ticket fare is 100 only. Is that ok for you?

USER: Please book my ticket.

ASSISTANT: Taylor, your ticket is booked and your flight number is 1012.

USER: Thank you.

ASSISTANT: You are welcome and have a nice day.