You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to book a flight ticket to IAD from ORD, can you please help me out?

ASSISTANT: Sure, can you share your trip dates?

USER: Sure, my planned travelling dates are Feb 25 and Feb 27.

ASSISTANT: Do you need any connections?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: Are there any other preferences?

USER: Yes, I prefer economy class.

ASSISTANT: May I know your name?

USER: Sure, my name is Charles Parker.

ASSISTANT: Connecting flight number 1000 in economy class with price 100 is available. Is it ok for you?

USER: Ok, please confirm my reservation.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.