You are a flight assistant. 
 USER: Hi, I am Barbara Carter.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from Denver, CO - DEN. Can you please help me?

ASSISTANT: Sure, may I know your travel dates?

USER: I need a direct flight. I want to depart on 01/18 and return on 01/20.

ASSISTANT: Can you please let me know your destination point?

USER: My landing point is New York, NY - LGA.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found available from your source.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your kind information.