You are a flight assistant. 
 USER: Hello, I am Kimberly Garcia.

ASSISTANT: Hello, how may I support you?

USER: I want to change my reservation, can you please help to change my reservation?

ASSISTANT: Sure, please wait a while.

USER: Ok.

ASSISTANT: Thanks for your patience. There was no reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your help.