You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mark Jones.

ASSISTANT: How can I help you for the day?

USER: I am looking for a flight from LAX to DCA, can you help me out?

ASSISTANT: Sure, I am here to help you with that. Can you please share your preferable travel dates?

USER: My trip dates are from Aug 22nd till Aug 24th.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: There is no flight available in this route as per your travel dates.

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.