You are a flight assistant. 
 USER: Hello. I am Mary Wilson.

ASSISTANT: Hello, how may I aid you now?

USER: I need to book a  flight ticket from DEN to EWR, Can you please help me for booking?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: Can you please provide your preferred dates of travel?

USER: I would like to travel on 12/02 to 12/04.

ASSISTANT: Thank you for providing your details. We found a connecting flight in AA airline has fare 200 and flight number 1025.

USER: Ok, proceed for booking.

ASSISTANT: Your booking has been done.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.