You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Katherine Jackson. Please book me a ticket from LAS to SEA to meet my old friends.

ASSISTANT: Sure, we are pleased to serve you. Can you share me your trip dates?

USER: I have planned to travel on Mar-24th and Mar-26th.

ASSISTANT: Do you prefer economy class or business class?

USER: I prefer business class.

ASSISTANT: Do you need any whistle stop in your journey?

USER: I need a halt.

ASSISTANT: Sorry to say that, there are no flights on your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us, we hope to serve you again for the next time.