You are a flight assistant. 
 USER: Hello, I am Janet Carter.

ASSISTANT: Hello, how can I help you?

USER: I want to book a ticket for round trip to New York, NY -  JFK from NY - LGA.

ASSISTANT: Sure, may I know your travelling dates?

USER: And my travel dates are 12/22 to 12/24.

ASSISTANT: Please wait a moment. I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, no flight was found with your details.

USER: Ok, not an issue.

ASSISTANT: Thank you, for choosing us. Have a nice day.