You are a flight assistant. 
 USER: Hello, I am Patricia Anderson.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket with single connection. Can you please be my helping hand?

ASSISTANT: Sure, could you please provide me your travelling details?

USER: Sure, my travelling dates are from 12/12 to 12/14.

ASSISTANT: May I know your airline codes?

USER: My origin code is DEN and destination to JFK. Please make sure that my price limit should be 200.

ASSISTANT: Thanks for waiting, unfortunately there is no flight on your details.

USER: It's ok, not an issue.

ASSISTANT: Thank you so much for choosing us.

USER: Thank you for your response.

ASSISTANT: Have a nice day.