You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to attend my grand mother memorial service at San Francisco, SFO. So can you please help me in booking a flight ticket from LAS?

ASSISTANT: May I know your travelling dates?

USER: My journey dates are from June 16 to June 18.

ASSISTANT: Please provide me your name to proceed for further.

USER: Sure, my name is Nicole Edwards.

ASSISTANT: May I know your airline preference?

USER: I prefer only normal cost airlines.

ASSISTANT: Provide me your connection limit? Do you have any class preference?

USER: I prefer economy class with single connection.

ASSISTANT: Ok, do you have other specifications?

USER: No, thanks for asking.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no flights available on your route with your requirements.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for taking assistance from us, have a great day ahead.