You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this pleasant evening?

USER: Due to my planned programme got changed to another location by my friends I need to change my reservation so can you please help me with that?

ASSISTANT: Ok, May I know your name for checking status of your reservation?

USER: Sure, please check the reservation with the name of Barbara Moore.

ASSISTANT: Sorry to say this, No reservation found on your name.

USER: Oh! May be booking is not done properly. Anyway, thank you for your information.

ASSISTANT: May be it was happen, Thank you for opting us.

USER: Most welcome.