You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for the day?

USER: Can you please help me to book a flight from IAH to DEN?

ASSISTANT: Sure, I am gleeful to help you with that. May I know your planned journey dates?

USER: Sure, my planned dates are on July 4th to 6th.

ASSISTANT: Can I know your connection limit?

USER: No, I prefer a direct flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There is a direct flight-1000 available in American Airlines with a fare of 200. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: May I know your name for further process?

USER: Sure, my name is Mary Evans.

ASSISTANT: Mary Evans, your booking is confirmed successfully in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.