You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can assist you now?

USER: I am Helen Rodriguez need to book a ticket to DEN from IAH, can you please help me in reservation?

ASSISTANT: Sure, I am glad to help you. Do you prefer a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Ok, let me know your planned dates.

USER: I would like to start on 11/15 and intend to return on 11/17.

ASSISTANT: In which class, you prefer to go?

USER: I am comfortable to travel in any class.

ASSISTANT: Thanks for your details, please standby.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a connecting flight with a fare of 1000. Are you okay with this?

USER: Please check the flight within the fare 500.

ASSISTANT: Sorry, no flights were found as per your request.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a nice day.