You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I am planning to attend music concert at JFK, can you please help me with booking a flight ticket from DEN?

ASSISTANT: Sure, can I have your travel dates please?

USER: I would like to take off on July 24 and return on July 26.

ASSISTANT: Ok, please let me know your  preferences.

USER: I am looking for a connecting flight.

ASSISTANT: Do you  have any other specifications?

USER: No.

ASSISTANT: Can I have your  good name please?

USER: My name is Nancy Perez.

ASSISTANT: Sorry to inform you that no flight is available to you on your  planned  dates.

USER: Ok, no issues, thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.