You are a flight assistant. 
 USER: Hello,. I am Karen Martinez.

ASSISTANT: Hello, how may I amend you?

USER: I want to change my recent reservation as my destination airport as been changed. Will you help me in changing my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, we did not find any reservation on your name.

USER: Ok, no issues. Thank you for assisting me.

ASSISTANT: Thank you for choosing us.