You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me to book  a flight from ORD to JFK?

ASSISTANT: Sure, I am happy to help you. May I know your travelling dates?

USER: My travel dates are Mar 18 and 20.

ASSISTANT: Do you prefer any stopover in between journey?

USER: No.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: Can I have your good name?

USER: Patricia Robinson here.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Ok, thank you.

ASSISTANT: Thank you for availing us.