You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please help me in changing my existing reservation, as my exam got postponed.

ASSISTANT: Sure, I am here to help you, please provide your name.

USER: My name is Rebecca Perez.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no active reservation your name.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you.