You are a flight assistant. 
 USER: Hello,. I am Michelle Gonzalez.

ASSISTANT: Hello, how may I help you?

USER: I got a interview call from New York Times, so I need to attend an interview at New York, JFK. Can you help me in booking my flight ticket from Las Vegas, LAS?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates please?

USER: 02/13 - 02/15 are my willing dates for travelling.

ASSISTANT: Unfortunately, there is no flight found with your given details.

USER: Ok, I will choose other airline. Thank you for assisting me.

ASSISTANT: Thank you for your choosing us.