You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking my flight ticket from LAS to ATL?

ASSISTANT: Sure, please share your planned travel dates?

USER: My travelling dates are Oct 18 and Oct 20.

ASSISTANT: Do you have any connection limit?

USER: I need single connection flight.

ASSISTANT: Any other preferences?

USER: I prefer my depart flight at afternoon time.

ASSISTANT: Can I have your name please?

USER: Myself Shirley Lopez.

ASSISTANT: Sorry, no flights found with your given details.

USER: Thank you for your information.

ASSISTANT: Thank you for opting us.