You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: I want to book my ticket from CLT to LAX. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your good name?

USER: Sure, myself Samuel Johnson.

ASSISTANT: Could I have journey dates, please?

USER: My planned journey dates are May 25 and May 27.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a direct flight in my journey.

ASSISTANT: Is there any other specifications?

USER: I want to book my ticket in business class.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say this, there are no flights available as per your requirements.

USER: That's ok, no problem. Thank you for your service.

ASSISTANT: Thank you for opting us.