You are a flight assistant. 
 USER: Hello, I am Anthony Smith.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking my flight ticket from DFW to DEN.

ASSISTANT: Sure, may I know your trip dates please?

USER: My planned trip dates are Feb 02 to 04.

ASSISTANT: Do you have any specifications?

USER: I need a halt. And my budget is 1000.

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

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for reaching us.