You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Shirley Baker. I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it  got postponed. Please help me in changing?

ASSISTANT: Sure, we will help you in changing. Let me check your details in our database and I will revert to you soon.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation found on your name to proceed further.

USER: Ok, no issues.

ASSISTANT: Thank you for contacting us.

USER: Thank you.