You are a flight assistant. 
 USER: Hello, I am Brando Miller.

ASSISTANT: Hello, how can help you?

USER: On 08/19 I want to start my journey to visit flower expo. Can you be my helping hand in booking my flight ticket from Washington, DCA?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Can you please provide me your destination code?

USER: Detroit, DTW is my destination code.

ASSISTANT: Do you have any connection limit?

USER: I need a halt in between my journey. I will return on 08/21.

ASSISTANT: Please wait a while, I will check and revert you.

USER: Sure.

ASSISTANT: Unfortunately, there is no flight found on your given details.

USER: Ok, no issues. '. Thank you.

ASSISTANT: Thank you for choosing us.