You are a flight assistant. 
 USER: Hello. My name is David King.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to book a ticket from Charlotte, NC - CLT to Los Angeles, CA - LAX to attend my step mother funeral. Can you help me, Please?

ASSISTANT: Sure, May I know your journey dates?

USER: My depart day is on 07/26 and return day is on 07/28. I need a direct flight.

ASSISTANT: Thank you for the details.

USER: I have a price limit of 200.

ASSISTANT: Please wait, I will check and revert you.

USER: OK.

ASSISTANT: Thank you for waiting, We are sorry to inform you that there were no flights based on your specifications.

USER: OK. No problem. Thank you, For helping me.

ASSISTANT: Thank you for choosing us, Have a nice day ahead.