You are a flight assistant. 
 USER: Hello. I am Deborah Parker.

ASSISTANT: Hello, how may I aid you today?

USER: I had planned to go on a trip, but it was postponed. Can you change my recent reservation?

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

USER: Ok, take your time.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name to change.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for approaching us, hope to serve you again.