You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I need to travel from ATL to OAK, can you help me with that?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: My trip dates are 12/07 and 12/09.

ASSISTANT: May I know your name please?

USER: I am Catherine Lewis.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a stopover flight in normal-cost airline.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: No issue, thank you.

ASSISTANT: Thank you for opting us.