You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Kenneth Campbell.

ASSISTANT: How may I aid you?

USER: I want to a attend a seminar on the agriculture and development at New York NY-LGA, help me in booking my flight ticket from CO-DEN.

ASSISTANT: Sure, I will assist you.

USER: Thank you.

ASSISTANT: May I know your journey dates?

USER: 04/27 is my starting point, my return date will be 04/29.

ASSISTANT: Do you have any price limit?

USER: My price is 1000.

ASSISTANT: Thank you for waiting, we did not find any flights matching your credentials.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us. Have a nice day.