You are a flight assistant. 
 USER: Hi, my name is James Gonzalez.

ASSISTANT: Hello, how can I assist you?

USER: I would prefer to travel to Chicago to attend Cultural, heritage and Folk Festivals with my family, can you book a flight ticket with a single connection?

ASSISTANT: Sure, can you help me with your journey dates?

USER: Sure, I want to depart from OAK to ORD. And my journey dates are 04/27 and 04/29.

ASSISTANT: Thank you for your details. Sorry, we did not found any flight based on your given details.

USER: Ok, no issues. Thanks for your kind service.

ASSISTANT: Thank you for reaching us.