You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to promote my business at Charlotte. Can you please help me in reserving the ticket from DEN to CLT?

ASSISTANT: Sure, we are blissful to help you. May I know your depart and arrival dates?

USER: Thank you very much for quick access. I am willing to take-off Nov 25 and again I will return back on Nov 27.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I am flexible with single connection flight.

ASSISTANT: May I know your class preference?

USER: My class preference is business.

ASSISTANT: Do you have any other preferences?

USER: No, I don't have any other preference regarding my journey.

ASSISTANT: Please wait for a while, I will search the best flight with your requirements.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for your time, there are no flights available with your specifications. For documentation, may I know your name please?

USER: Sad to hear, I will choose an other way to reach my destination.

ASSISTANT: Thank you for choosing us.

USER: Myself Susan Hill.

ASSISTANT: Thank you.

USER: Thank you very much for your information.