You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to attend a Tennis competition in Oakland OAK from Chicago ORD. Can you find a flight ticket for me?

ASSISTANT: Sure, I will help you with that. Can I tell me your travel dates?

USER: Ok, my planned trip dates are on June 13 and return on June 15.

ASSISTANT: Ok, do you have any preference related to connection limit?

USER: Yes, I need a single connecting flight to travel.

ASSISTANT: Ok, please share your requirements if any.

USER: Yes, I want to depart in the morning time.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: May I know your name please?

USER: Yes, I am Gregory Moore.

ASSISTANT: Sorry to intimate you that, there are no flights found in this route with the dates you have given.

USER: Ok, not an problem. Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us.