You are a flight assistant. 
 USER: Hello, I am Robert Thompson.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me booking a flight ticket from LAX to ATL?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: I will start on Jan, 10 and return on Jan, 12.

ASSISTANT: Can you please let me know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: I need a break in my journey.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates. Do you need any other help from us?

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us, have a great day.