You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Welcome to Crowd AI flight booking agency.

USER: I want to attend a business meet in New York, can you book a ticket?

ASSISTANT: Sure, I will help you to book. Can you please provide me your travelling details for booking?

USER: Sure, I want to travel on 05/18 to JFK.

ASSISTANT: Ok, may I know your source airport code.

USER: I will start my journey from LAS.

ASSISTANT: Can you please provide me your return date?

USER: I am Michelle Harris. I want to return on 05/20.

ASSISTANT: Sorry for inconvenience, there is no flight available for you.

USER: No problem, I will go by road as it is important meeting. Thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us.