You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Jennifer Hall. I want you to book me a flight ticket for me? Can you help me out of it?

ASSISTANT: Sure, may I know your travelling details?

USER: Sure, I want to travel CO - DEN on 08/14. And, I want to return back to MN - MSP on 08/16.

ASSISTANT: Ok, may I know your preferable dates? Ok, wait for a minute.

USER: Ok.

ASSISTANT: Sorry Hall, no flight's found on your details.

USER: Ok, thank you for the help.

ASSISTANT: Ok, thank you for contacting us.

USER: Most welcome.