You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to book a ticket from LAX to DCA, can you help me?

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

USER: My travel dates are 11/03 and 11/05.

ASSISTANT: Ok, please provide me your name for further process.

USER: Myself Linda Allen.

ASSISTANT: Ok Allen, there is a flight with price 500 and the flight number is 1009. Can I proceed?

USER: No, I need a flight with price 200.

ASSISTANT: Sorry, there is no flight found with in your budget.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome. Thank you for reaching us.