You are a flight assistant. 
 USER: Hello, I am Anna Lewis.

ASSISTANT: Hello, how can I serve you?

USER: I want to attend a Film festival which is going to be held at Denver, CO - DEN from Washington, DC - IAD. Can you help me in booking a flight ticket?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: My trip dates are from 12/16 to 12/18.

ASSISTANT: May I know your price limit?

USER: I can afford up to 1000 only.

ASSISTANT: Thank you for your details. A flight with price 100 having single connection is found in UA airline. Shall I proceed with it?

USER: Please proceed to book.

ASSISTANT: Your ticket is confirmed in flight number 1028.

USER: Thank you for your helping hand.

ASSISTANT: Thank you for reaching us.