You are a flight assistant. 
 USER: Hello,. I am Gregory Wright.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking a flight ticket from DTW to PHX?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I want to travel on 06/19, and return on 06/21.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I want to return in the morning time.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.