You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you aid me to book flight ticket from DFW to CLT?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My trip dates to travel on Dec 6 and return on Dec 8.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I looking for a connecting flight.

ASSISTANT: Do you have any class preferences?

USER: I prefer to travel in business class.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: Thank you for asking, I do not have any other requirements.

ASSISTANT: Can you please provide your name to proceed further?

USER: Sure, I am Brenda Edwards.

ASSISTANT: Sorry, there are no flights available at your request.

USER: It's ok, I will choose another day to travel. Thank you for the help.

ASSISTANT: Thank you for contacting us, have a nice day.