You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I have to attend comic show in ATL with my friends. Could you please help me to book a ticket from OAK?

ASSISTANT: Sure, may I know your journey dates?

USER: I want to start on 07/27 end on 07/29.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need single connection.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to notify you that there is no flight found on your specified details. May I know your good name please?

USER: Not an issue. Christopher Evans.

ASSISTANT: Thanks for reaching us, have a nice day.

USER: Thank you.