You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please make a airline reservation in business class?

ASSISTANT: Sure, I am happy to help you. Could you please help me with your travel dates?

USER: My journey dates are on June 30th and July 2nd.

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: My airport codes are, SFO to CLT.

ASSISTANT: Ok, do you have any class preference?

USER: I already mentioned above.

ASSISTANT: Sure, may I know your name?

USER: My name is Nicole Perez.

ASSISTANT: Thank you. Please wait for a while.

USER: Sure, please check the flights availability with one connection.

ASSISTANT: Sorry, there is no flight available on your preferred travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: You are welcome and thank you for choosing us.