You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good morning. May I know your name please?

USER: Good morning. My name is Linda Lewis.

ASSISTANT: Hi Linda.

USER:  Me and my wife plan to celebrate, our tenth anniversary in New York.

ASSISTANT: That's good to hear.

USER: Can you please book me a flight ticket from SEA to LGA?

ASSISTANT: Ok, may I know your preferable dates of travelling?

USER: I need my tickets from 07/17 to 07/19.

ASSISTANT: Sorry Linda, unfortunately there is no flight with your requested dates.

USER: No problem, Thank you for your assistance.

ASSISTANT: Thank you for choosing our service, have a good day.