You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Nicholas Turner here, I want to book a ticket from LAS to JFK, can you please help me in this intent?

ASSISTANT: Ok, may I know your planned dates for this journey please?

USER: Sure, my planned dates of journey is from 05/13 to 05/15.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Nicholas Turner there is no flight available for you, sorry for the inconvenience.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.

ASSISTANT: Have a great day.