You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: I had a very bad experience with your agency last time, I hope this time you provide me good service. I want you to book my flight ticket for my round trip from IAD.

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

USER: I will depart on 02/11 and return on 02/13.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Charles Carter.

ASSISTANT: There is a flight available on your requested dates from Hawaiian airlines with 1 connecting flight.Shall I confirm your booking?

USER: That's perfect! Please book the ticket.

ASSISTANT: Your ticket is booked with flight 1026.

USER: Thank you very much.

ASSISTANT: You are welcome.