You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to go for DTW  but I did not found any flight ticket with my requirements from past 2 weeks. So can you please help me in booking my flight ticket?

ASSISTANT: Sure, May I know the source code?

USER: My source code is MCO.

ASSISTANT: Please help me with your trip dates.

USER: My trip dates are 08/12 and 08/14.

ASSISTANT: May I know your name?

USER: Myself Emily Perez.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, fine thank you for your information.

ASSISTANT: Thank you.