You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Scott.

ASSISTANT:  Deborah Scott, how may I assist you with today?

USER: Please help me in booking my ticket from DEN to IAH?

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: My travelling dates are Feb 15 and Feb 17.

ASSISTANT: Do you need a direct or connecting flight?

USER: I need connecting flight.

ASSISTANT: Please let me know if you have any other preferences in your journey.

USER: Can you please search for business class flight ticket.

ASSISTANT: Sure, I will check. Please allow me a minute of your time.

USER: Ok, I will wait for your reply.

ASSISTANT: I am really sorry to inform you that there are no business class flights available.

USER: Ok, fine thank you for checking.

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