You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: Myself Thomas Nelson. I am looking for a flight from SEA to PHL, can you help me in booking the flight ticket?

ASSISTANT: I am here to help you with your flight ticket booking. Can you please provide your planned dates of your journey?

USER: Sure, my travel dates are 02/21 and 02/23.

ASSISTANT: Please wait for sometime, I will get back to you with a suitable flight for your journey.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry Nelson, there are no flights which can travel to your region on your planned dates of your journey.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead.