You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I help you?

USER: Please book a ticket from New York to Detroit.

ASSISTANT: Sure, May I know the travel dates?

USER: My travel dates are from 04/06 to 04/08.

ASSISTANT: Please help me with your journey codes.

USER: Sure. Journey codes are LGA and DTW.

ASSISTANT: May I know your name?

USER: My name is Carolyn Turner.

ASSISTANT: Please wait a minute.

USER: Ok.

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

USER: Thanks for your help.

ASSISTANT: Thank you for opting us.