You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Pamela Johnson.

ASSISTANT: Nice to meet you Pamela.

USER: Can you help me to change my recent reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it. Thank you.

USER: It's ok, thank you for checking.