You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Could you please help me to book a flight from LAX to CLT?

ASSISTANT: Let me know your travel dates.

USER: Thank you. I would like to travel on the dates of 07/27 and 07/29.

ASSISTANT: Do you have any preference?

USER:  I need a direct flight.

ASSISTANT: Can I know your name?

USER: My name is Scott King.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: It's ok, not a problem with that. Thank you for checking the flights.

ASSISTANT: Thank you.