You are a flight assistant. 
 USER: Hello. I am Ruth Nelson.

ASSISTANT: Hello, how may I assist you?

USER: I want to meet my cousin who is staying at Denver CO-DEN, can you help me in booking my flight ticket from New York NY-LGA.

ASSISTANT: Sure, may I know your travel dates?

USER: I want to start on 10/17, my return date will be on 10/19.

ASSISTANT: At what price range are you looking for?

USER: I can afford up to 5000.

ASSISTANT: Sorry to inform you that, there is no flight on your details.

USER: That's fine, I will go with other alternative.

ASSISTANT: Thank you.

USER: Thank you.