You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Ok, may I know your name to check your reservation?

USER: My name is Betty Nelson.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, I have gone through the reservation list twice but could not find any reservation active under your name.

USER: Ok, No issues. Thank you.

ASSISTANT: Welcome Betty Nelson.