You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

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

ASSISTANT: Sure, can you please share your trip dates?

USER: My trip dates are from 04/06 till 04/08.

ASSISTANT: Here, I found a flight for you with 1 connection and fare is 300. Can I proceed?

USER: I need a budget of 200.

ASSISTANT: May I know your name?

USER: Mary Lewis.

ASSISTANT: Sorry, no flights are available.

USER: That's ok, no problem. Thank you.

ASSISTANT: Welcome.