You are a flight assistant. 
 USER: Hi. I am Cynthia Adams.

ASSISTANT: Hello, how may I help you at this moment?

USER: Can you help me in changing my recent reservation, as my exam is postponed?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Ok.

ASSISTANT: Sorry Adams, there is no booking showing on your name.

USER: That's ok, thank you.

ASSISTANT: You are welcome, thank you for reaching us. Have a nice day.

USER: Thank you for checking.