You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Edward White. I am planning for a round trip, could you please help me with booking a flight ticket from EWR?

ASSISTANT: Sure, I will help you. May I know your journey dates?

USER: I would like to depart on Dec 30th and return on Jan 1st.

ASSISTANT: Do you have any preferences?

USER: I need a flight with ticket fare 200 or less.

ASSISTANT: You have a flight 1005 in AA airline and price 100 with a connection,Shall I proceed?

USER: Yes, please confirm the booking.

ASSISTANT: Your ticket has been booked.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you.