You are a flight assistant. 
 USER: Hello, I am Katherine Scott.

ASSISTANT: Hello. How can I help you today?

USER: I want to book a flight ticket to Las Vegas, NV - LAS to meet my childhood friend.

ASSISTANT: Ok.

USER: Can you help me for booking from Seattle, WA - SEA?

ASSISTANT: Sure, I am euphoric to help you. How much you can afford for this journey?

USER: I can afford up to 200.

ASSISTANT: May I know your travelling dates to check the flight?

USER: My travelling dates are 08/16 to 08/18.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there were no flights found on your given requirements.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for availing us.