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

ASSISTANT: Hello Miller. What can I do for you?

USER: Owing an emergence, I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure Jennifer, I will assist you to make you happy.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name in our reservation list.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for opting us, have a nice day.