You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Thomas.

ASSISTANT: How can I assist you at this moment?

USER: Ok, please can you cancel my reservation with is existing and given me the comfirmation?

ASSISTANT: Sure, I will help you with this.

USER: Ok, thank you.

ASSISTANT: Shirley Thomas, there is no active reservation found under your name in our database.

USER: Thank you for the information. Not a problem if you did not find.

ASSISTANT: Thank you for contacting us.