You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit to Denver to learn new languages on 07/16. Can you help in booking a flight ticket with name George Lopez?

ASSISTANT: Sure, may I know your preferable airport codes please?

USER: Sure, I want to fly from CLT to DEN.

ASSISTANT: Could you please provide me your return date?

USER: Sure, I need to catch a return flight on 07/18.

ASSISTANT: Do you have any other specification?

USER: Yes, I need a halt in between  journey. And it will be helpful if price limit is 200.

ASSISTANT: Thanks for providing your details, we found a flight on your details with airline UA, flight number: 1003. Shall I proceed for booking?

USER: Go ahead.

ASSISTANT: Your e-ticket has been booked.

USER: Thanks for your assistance.

ASSISTANT: Thanks for picking us.