You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Can you help me in booking a flight ticket from DEN to DCA?

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: I want to travel on 09/22, and return on 09/24.

ASSISTANT: Are you fine with connecting flight?

USER: I need a break in my journey.

ASSISTANT: Do you have any requirements?

USER: I prefer for economy class.

ASSISTANT: Can I know your name?

USER: I am Nicole Collins.

ASSISTANT: Sorry to say, no flight is available for you as per your requests.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.