You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Karen Smith.

ASSISTANT: How may I help you?

USER: I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, I am here to help you, please wait a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Thanks for your time, there is no reservation found under your name to cancel it.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for choosing us, have a nice day.