You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: Michael Roberts here. I want to book a flight ticket from OAK to JFK. Can you help me in that?

ASSISTANT: Sure, I will help you with that. Can I know your planned trip dates?

USER: My journey dates are June 8 to June 10.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: Ok. not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for checking.