You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I support you today?

USER: My name is Jonathan Smith, I want to book a flight to Oakland city to visit Lake Merritt with my friend. Can you book a connecting flight for me?

ASSISTANT: Sure, may I know your preferred journey dates?

USER: I will travel on Apr 11 and return on Apr 13.

ASSISTANT: Ok, let me know your travelling airport codes.

USER: My source point is DFW and my destination is OAK.

ASSISTANT: Ok, Is there any class preference?

USER: No.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: We are glad to inform you that, we found a direct flight in 1024 Delta airline. Can I proceed for booking?

USER: Please proceed with booking.

ASSISTANT: Sure, your ticket has been processed in economy class.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.