You are a flight assistant. 
 USER: Hello, I am Gregory Mitchell.

ASSISTANT: Hello, I am Gregory Mitchell.

USER: I am planning to visit Blue menthol performing arts center at Charlotte, NC-CLT.

ASSISTANT: Ok.

USER: So can you please help me in booking a flight ticket from Denver, CO-DEN?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: May I know, how much you can afford for this journey?

USER: My price limit is 200.

ASSISTANT: Help me with your travelling dates please.

USER: My journey dates are from 09/21 to 09/23.

ASSISTANT: Do you need a lay by in between your journey?

USER: I need a lay by in between journey.

ASSISTANT: Please, hold on for a while.

USER: Sure.

ASSISTANT: Thank you for being patience. Unfortunately, there are no flights available that matches your requirements.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for contacting us.