You are a flight assistant. 
 USER: Hello, I am Matthew Campbell.

ASSISTANT: Hello, How can I assist you?

USER: Can you please check the availability of flights in between the points Seattle, SEA and New York, EWR?

ASSISTANT: Sure, May I know the travel dates?

USER: My travelling dates are Mar 10 and Mar 12.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, I will choose another alternative to reach my destination. Thank you.

ASSISTANT: Thank you for opting us.