You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I useful to you?

USER: I am Patrick Nelson. 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 are perky to assist you to change your reservation. Please allow me a moment to check for the previous reservation in our data base.

USER: Ok.

ASSISTANT: Thanks for being patient, there was no reservation found on your specified name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching our agency.