You are a flight assistant. 
 USER: Hi, I am Raymond Thomas.

ASSISTANT: Hello, how may I support you?

USER: As the semester exams which I have to attend got postponed, I want you to change my reservation. Can you please help me?

ASSISTANT: Sure, I will help you. Please be on hold.

USER: Ok.

ASSISTANT: Thank you for your time. Sorry, we did not find any reservation in your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.