You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is William Thomas.

ASSISTANT: How may I guide you?

USER: I have a meeting with Tim Cook at New York regarding expansion of Apple Inc. Can you help me in booking a ticket?

ASSISTANT: That's great, may I know your journey dates please?

USER: I am planning in the month of July, please find the availability on dates 07/08 and 07/10.

ASSISTANT: Which airport do you prefer in New York, JFK or EWR?

USER: I prefer EWR as it is near to my office. The source airport code is SEA.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: William, no flights has been found on your requested dates.

USER: That's fine, I will try with other agency. Thank you for the information.

ASSISTANT: Thank you for choosing us. Have a nice day.