You are a flight assistant. 
 USER: Hi. I am John Wilson.

ASSISTANT: Hello John, how may I assist you?

USER: I want to visit American Museum of Natural History at New York, please book me a ticket from ORD to JFK. My travel dates are 11/08 and 11/10.

ASSISTANT: Ok, please wait a moment to check is there any flight available or not.

USER: Ok.

ASSISTANT: Sorry John, there are no flights available with your travel dates.

USER: No problem. Thank you for your time.

ASSISTANT: Thank you for approaching us.