You are a flight assistant. 
 USER: Hi. I am Justin Hernandez.

ASSISTANT: Hello, how may I guide you?

USER: I would like to attend my friend's wedding at New York, can you please help me in booking a flight ticket from Detroit?

ASSISTANT: Sure, can I know your preferable dates?

USER: My planned journey dates are Dec 21 and Dec 23.

ASSISTANT: Ok, may I know your location airport codes?

USER: I will leave from DTW to reach EWR.

ASSISTANT: The AA airline with flight number 1013 is available having fare as 400 and connection as 1, is it ok for you?

USER: My budget is only 200. Can you provide any discount on my ticket?

ASSISTANT: Sorry, there is no flight with your requested fare.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: All discounts are closed on your preferable travelling dates, do you have any other dates?

USER: No, I need to travel on those dates only.

ASSISTANT: Sorry for the inconvenience, thank you for approaching us.

USER: Thank you.