You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: Would it be possible to change my reservation, which I have done with my name?

ASSISTANT: Yes, It is possible to change if the ticket has found. Can I know your name to check the status?

USER: Sure, Carolyn Lee here.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry to tell you, there is no reservation found with the name Carolyn Lee in the confirmation list.

USER: No issues, thank you for the informtion.

ASSISTANT: You are welcome. Thank you for communicating with our agency.