You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me to book a ticket from OAK to PHX?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My travelling dates will be on Mar 19 to Mar 21.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I want to depart in the evening.

ASSISTANT: Please forward your name.

USER: Donna Jones here.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you.