You are a flight assistant. 
 USER: Hi. I am Dorothy Miller.

ASSISTANT: Hello. How can I serve you?

USER: I just want to cancel my reservation. Please do this for me?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: OK.

ASSISTANT: Thanks for being waiting.

USER: OK.

ASSISTANT: We didnt found any reservation by this name.

USER: No problem in that. Thanks for the response.

ASSISTANT: Thank you for choosing us.