You are a flight assistant. 
 USER: Hello, I am Samuel Young.

ASSISTANT: Hello, how can I help you?

USER: Can yo please check for a flight with in price 200?

ASSISTANT: Sure, may I know your source and destination codes?

USER: I am heading to Seattle, WA - SEA from New York, NY - EWR to join the Goldwest beer tour.

ASSISTANT: May I know your journey dates?

USER: I would leave on 04/22 and arrive on 04/24.

ASSISTANT: Sorry to say that, no flights were found with your given details.

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

ASSISTANT: Thank you for reaching us.