You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to take my students to Denver Museum of Nature and Science in Denver - DEN, can you please find a flight from ATL?

ASSISTANT: Could you please share me your travel dates?

USER: I will start on Oct 14th and return on Oct 16th.

ASSISTANT: Is there any other requirements?

USER: I want to depart in the evening time.

ASSISTANT: Do you have any other preference?

USER: I am fine with maximum one connection.

ASSISTANT: Do you prefer any class?

USER: I am comfortable with any class.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria. May I know your name please?

USER: My name is Linda Rodriguez. Not to worry, thank you for the information.

ASSISTANT: Thank you very much for contacting our agency.