You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Miller.

ASSISTANT: How may I guide you today?

USER: I am planning to visit Millennium Park at Chicago, could you please help me with booking a direct flight?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: I would like to depart on Sept 10th and return on Sept 12th.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My source airport code is EWR and destination airport code is ORD.

ASSISTANT: Do you have any specifications?

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

ASSISTANT: I found a ticket for you with price of 100, flight number is 1009 and connection is 1. Is it ok for you?

USER: Yes, please confirm the booking.

ASSISTANT: I confirmed your ticket successfully.

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

ASSISTANT: Thank you for reaching us.