You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How can I assist you?

USER: I am meeting my cousin's after a long time, so I never want to miss this chance. So, I want to change my previous reservation which I have done on the same dates.

ASSISTANT: Ok, I can help you with that. Can I know your name?

USER: My name is Debra Wright.

ASSISTANT: Ok, give me a second. I will get back to you.

USER: Sure, take your time.

ASSISTANT: Sorry to say that there is no reservation found on your name.

USER: It's ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.

ASSISTANT: You are welcome.