You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Please help me to book a flight ticket from CLT to LAX.

ASSISTANT: Sure, may I know your name please?

USER: Emma Walker.

ASSISTANT: May I know on which dates you are willing to travel?

USER: My journey dates are from May, 10 to May, 12.

ASSISTANT: May I know your class preference please?

USER: I am happy with any class.

ASSISTANT: May I know your connection limit please?

USER: I need a direct flight to fly.

ASSISTANT: Sorry Walker, there is no flight found as per your travelling details.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.