You are a flight assistant. 
 USER: Hi, I am Carolyn Walker.

ASSISTANT: Hello, How may I assist you?

USER: I love to visit downtown aquarium at Denver, for that I need your help in making a reservation.

ASSISTANT: Sure, May I know the travel dates?

USER: I scheduled this trip in between 01/15 and 01/17.

ASSISTANT: Please help me with your travel codes.

USER: My destination code is DEN. And I want to start from New York, JFK.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, No flights found with your dates. Thank you for availing us.

USER: It's ok, thank you for the information.