You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to meet my friend on his birthday, can you please help me to book my flight ticket?

ASSISTANT: Sure, I can help you with this. May I know your preferable airport codes, please?

USER: I want to depart in the morning from EWR to DTW.

ASSISTANT: Can you please share your planned travel dates?

USER: I want to start my journey on Aug 10 and I will return back on Aug 12.

ASSISTANT: May I know your name please?

USER: My name is Debra Harris.

ASSISTANT: Do you have any other specifications?

USER: Make sure my return time should be in the evening.

ASSISTANT: There are no flights available in this route as your travel dates.

USER: Not an issue, I will find an other way to reach my destination. Thank you for checking.

ASSISTANT: Thank you for reaching us, have a great day.