You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: I am Christine Moore. Can you help me in booking from ATL to OAK?

ASSISTANT: Sure, May I know the journey dates?

USER: My journey dates are from Mar 27 to Mar 29.

ASSISTANT: Do you have any connection limits?

USER: I need a connecting flight.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Please help me with your class preference.

USER: I am comfortable with any class.

ASSISTANT: Please help me with your departure and arrival timings.

USER: I want to depart in the afternoon time.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for availing us.