You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to attend my cousin's convocation ceremony, so please book my ticket from SEA to ORD.

ASSISTANT: Can you give me your travel dates?

USER: My travel dates are Feb 21 and Feb 23.

ASSISTANT: Do you have any airline preference?

USER: I prefer normal-cost airlines.

ASSISTANT: Do you need any connections?

USER: I need a connecting flight.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: Delta Airlines with flight number 1021 with price 100 and economy class, with single connection is available. Is it ok for you?

USER: Please book my ticket.

ASSISTANT: Can you give me your name for further processing?

USER: Ronald Edwards here.

ASSISTANT: Your ticket has been booked. Flight departure time is 3:00AM and arrival time is 0:00AM.

USER: Thank you.