You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,.

USER: I am Margaret Miller.

ASSISTANT: How may I help you?

USER: I want to book a flight ticket to attend Sport's Festival in Atlanta, GA - ATL. Can you aid me in booking a flight ticket from Detroit, MI - DTW?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: My preferable travel dates are 07/16 - 07/18.

ASSISTANT: Do you have any price limit?

USER: Yes, it is 1000.

ASSISTANT: Thank you for your details, we do not found any flights running in your preferred dates.

USER: That's fine, not an issue. Thanks for your kind response.

ASSISTANT: Thank you for your approach. Have a nice day.