You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Nicolas Allen here. I want to travel in a flight with the price limit 500, can you please help me in booking a ticket?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: The travel dates are from 03/23 to 03/25.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: Source airport code is LGA and destination airport code is IAH.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok.

ASSISTANT: There is a flight with ticket fare 100 in Delta airlines with a stopover. Is it ok for you?

USER: Please proceed booking my ticket.

ASSISTANT: Your booking is confirmed with flight number 1018.

USER: Thank you helping me out.

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