You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I'm planning to meet my old friends, can you please book the ticket from DTW to OAK?

ASSISTANT: Sure, could you please share your journey dates?

USER: Sure, my planned departure and return travel dates are 1st and 3rd of June.

ASSISTANT: Please let me know your connection limit?

USER: I prefer single connected flight to travel.

ASSISTANT: Are there any more specifications?

USER: Yes, I want to depart in the afternoon time and I need economy class ticket.

ASSISTANT: May I know your good name to proceed further?

USER: My name is Matthew Lewis.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for reaching us.