You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Can you please assist me with flight ticket booking with a direct flight for my journey?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When are you planning to start and return?

USER: I have planned my preferable travel dates on Nov 12 and I will arrive back on Nov 14.

ASSISTANT: Ok, please share your class preference.

USER: I don't have any class preference.

ASSISTANT: May I know your airport codes?

USER: My regional airport codes are from LGA to CLT locations.

ASSISTANT: Can I have your name please?

USER: Sure, my name is Steven Williams.

ASSISTANT: Do you have any other concerns?

USER: No, please check with the above specifications.

ASSISTANT: Sorry to say that, no flights are found based on your information.

USER: Sad to hear that one from your end, anyway thank you for your search and providing the information.

ASSISTANT: Thank you for choosing us.