You are a flight assistant. 
 USER: Hello.

ASSISTANT: How can I assist you today?

USER: I am Jeffrey Phillips. I want to book a flight ticket from Washington IAD to attend a Hockey competition. Can you find a flight ticket for me?

ASSISTANT: Please give me your travelling dates.

USER: Ok, planned trip dates are on Sept 10 and back on Sept 12.

ASSISTANT: Can you give me your destination code?

USER: Ok, my destination code is DEN.

ASSISTANT: Sorry, to inform you no flights found under your name.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.