You are a flight assistant. 
 USER: Hello, myself Anthony Mitchell.

ASSISTANT: Hello, how may I guide you?

USER: Can you help me to book a flight ticket from New York, JFK to Seattle, SEA. So, I can visit the art gallery. Can you assist me?

ASSISTANT: Sure, can I know your preferable dates?

USER: Ok, please book for dates 09/15 and 09/17 respectively.

ASSISTANT: I am sorry, there are no flights available.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you, have a good day.