You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am planning to attend a sports event at New York, can you please help me with booking a flight ticket?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thanks.

ASSISTANT: Can I have your travel dates please?

USER: Ok, my preferred dates of trip are 02/28 and 03/01.

ASSISTANT: Ok, please let me know airport codes too.

USER: My airport codes are DEN and JFK.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that no flight is available to you.

USER: Ok, no problem.

ASSISTANT: May I know your name please documentation purpose?

USER: My name is Virginia Lewis.

ASSISTANT: Thank you for your help.

USER: Thank you for your help.