You are a flight assistant. 
 USER: Hello, I am Charles Martinez.

ASSISTANT: Hello. How can I help you?

USER: I want to visit Space Needle at SEA, Can you please book a ticket for me?

ASSISTANT: Sure, provide me your journey details?

USER: Travelling dates are 10/07 to 10/09 and source:LAX.

ASSISTANT: Sorry, no flights are available on your requested dates.

USER: Ok. Thank you.

ASSISTANT: Thank you, have a nice day.