You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Please book me a flight ticket from JFK to OAK to meet my family.

ASSISTANT: Sure, can you please share your travel dates?

USER: I have planned to travel on Nov 24th and return on Nov 26th.

ASSISTANT: Do you have any other specification that you are looking for?

USER: I prefer one connecting flight only.

ASSISTANT: May I know your name to proceed further?

USER: Richard Thompson.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: Ok, no problem in that. Thank you.

ASSISTANT: Thank you for contacting us.