You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to reserve a ticket from OAK to ORD, can you help me in doing that?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My trip dates are Aug 06 to 08.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications? May I know your good name please?

USER: My depart time is in evening and return is in afternoon time. I am Jack Evans.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.