You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I would like to visit Atlanta to meet my brother, can you please help me to book a flight ticket from LAS to ATL?

ASSISTANT: Sure, I am here to help you with that. Please, share me your travel dates.

USER: Sure, my journey dates are Oct 28 and Oct 30.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your class preference?

USER: I am comfortable to travel in any class.

ASSISTANT: Do you have any more specifications?

USER: No.

ASSISTANT: Let me know your name to proceed further.

USER: My name is Nicole Perez.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your own time.

ASSISTANT: Sorry to say that, there are no flights found on your routes as per your specifications.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for opting us.