You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Ashley Walker.

ASSISTANT: How can I assist you today?

USER: I need to travel New York, can you please reserve flight ticket from CLT and EWR?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: My travelling dates are Oct,20 and Oct,22.

ASSISTANT: May I know your class preference please?

USER: I need a business class flight.

ASSISTANT: Ok, please let me know if you have any other specifications.

USER: I need a single connection flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: That's ok, I will choose any other source to travel my destination.

ASSISTANT: That's better, Ashley Walker.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a great day.