You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you please assist me in making an airline reservation from OAK to ATL?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My itinerary dates are Dec 11th and Dec 13th.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a flight with single connection.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Sandra Clark is here.

ASSISTANT: Sorry Sandra Clark, no flights are available on your route.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for choosing us.