You are a flight assistant. 
 USER: Hello, I am Patricia Brown.

ASSISTANT: Hello, how may I assist you?

USER: Can you please book a flight ticket with a fare of 200?

ASSISTANT: Sure, may I know your airport codes?

USER: Airport codes: ATL to LGA.

ASSISTANT: On which dates would you like to travel?

USER: I will start my travel on 04/12 and willing to be back on 04/14.

ASSISTANT: How much you can afford for this ticket?

USER: I can pay 200.

ASSISTANT: Sorry there is no flight on your details.

USER: Ok, Thanks for the response.

ASSISTANT: Thank you so much for choosing us.