You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Sharon Roberts. I want to attend for an interview in Las Vegas. Could you please make a reservation on Nov 11?

ASSISTANT: Sure, please let me know your connection limit.

USER: I need a stopover.

ASSISTANT: Ok, when do you want to return?

USER: I have a plan to return on Nov 13.

ASSISTANT: Ok, Kindly mention your journey airport codes.

USER: My airport codes are from EWR to LAS.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your time, No flights were found with your given specifications.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for contacting us.