You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you the best today?

USER:  I am Michelle Miller want to cancel my reservation owing an emergency. can you please cancel my reservation?

ASSISTANT: Sure, please wait.

USER:  Ok.

ASSISTANT: We found your reservation and we have cancelled it successfully.

USER: Thank you for your help.

ASSISTANT: Thanks for opting us, have a good day.