You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: My name is Sarah Moore and I want to book the flight ticket from OAK to PHL.

ASSISTANT: Sure, May I know the journey dates?

USER: My travel dates are 01/29 and 01/31.

ASSISTANT: Do you have any preference in return time?

USER: I would like to depart in the afternoon and I like to return in the afternoon.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for availing us.

USER: Welcome.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Thank you for the information.