You are a flight assistant. 
 USER: Hello, I am Kathleen Clark.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket from SEA to LAS to meet my friend, can you please help me to book a flight ticket?

ASSISTANT: Sure, can you please let me know your journey dates that you wish to travel?

USER: My planned trip dates are 10/16 to 10/18.

ASSISTANT: May I know at what price you are looking for airfare?

USER: I can spend upto 500.

ASSISTANT: Sorry, there were no flights with your given details.

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

ASSISTANT: Thank you for reaching us.