You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I have to meet my business partner in Seattle, can you please book me a flight ticket from EWR to SEA?

ASSISTANT: Please mention your travel dates.

USER: I want to travel on 08/14 and return back on 08/16.

ASSISTANT: May I know your name please?

USER: My name is David Rodriguez.

ASSISTANT: Sorry, no flight is available on your route.

USER: Not an issue, I will find an other way to travel. Thank you for the information.

ASSISTANT: You are welcome.