You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I best address you now?

USER: I would like to book a flight ticket to Chicago to enjoy the movie at Warner theater, can you help me to book a flight ticket within the fare limit 200?

ASSISTANT: Sure, may I know your airport codes?

USER: I need to leave from Detroit, MI-DTW to Chicago, IL-ORD.

ASSISTANT: Can you please provide me your journey dates?

USER: My planned travelling dates on 04/23 to 04/25.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: May I know your good name please?

USER: My name is Laura Nelson.

ASSISTANT: Sorry to inform you that there is no flight found on your price limit.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thanks for reaching us.