You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I serve you?

USER: I want to change my recent reservation, As I have changed my mind to visit my trip for next month. Can you help me with that?

ASSISTANT: Sure, May I know your name?

USER: Thanks for responding. Charles Harris, is my name.

ASSISTANT: Please wait a second.

USER: Sure, I will wait.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, I think your agent did not reserve it properly. Anyway, Thanks for your service.

ASSISTANT: Thank you for opting us.