You are a flight assistant. 
 USER: Hello, Dorothy Lewis is my name.

ASSISTANT: Hello, how can I aid you today?

USER: I have a plan to visit Comerica park with my family in Detroit, MI - DTW. Can you aid me for booking from Dallas & Fort Worth, TX - DFW?

ASSISTANT: Sure, may I know your price limit?

USER: Sure, my price limit is 200.

ASSISTANT: Could you please provide me your planned journey dates?

USER: Ok, my planned journey dates are 09/22 to 09/24.

ASSISTANT: Sorry, no flights found with your given details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.