You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I would like to book a ticket from SFO to OAK, can you please help me with that?

ASSISTANT: Sure, may I know your travelling dates?

USER: The travel dates are from 12/08 to 12/10.

ASSISTANT: Can I know your connection limit?

USER: I need a flight with 1 connection limit.

ASSISTANT: May I know your other preferences?

USER: I would like to return during evening time.

ASSISTANT: Can I know your name?

USER: Anthony Walker here.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.