You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I need to book a flight ticket from CLT to PHX to attend a science exhibition. Can you help me in booking a connected flight?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: Sure, my scheduled dates are Nov 14 and Nov 16.

ASSISTANT: Do you have any class preference?

USER: I would prefer a business class.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: Sure, Brandon Brown here.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, no worries at all. Thank you for your information.

ASSISTANT: Thank you for choosing us.