You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me with changing my reservation which I have done to go for Photography but now I am unable to go?

ASSISTANT: Ok, please mention your good name.

USER: Sure, please check the reservation status with the name of Thomas Carter.

ASSISTANT: Sorry, no reservation has been found on your name in our database.

USER: Oh! May be I did not confirmed my booking properly. Anyway, thank you for your time.

ASSISTANT: Thank you for approaching us. Have a nice day.

USER: Most welcome.