You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Donna Baker want to cancel my reservation owing an emergency. Can you please help me in cancelling?

ASSISTANT: Sure. Please wait a while.

USER:  Ok.

ASSISTANT: Thanks for being waiting. We didn't found any reservation by this name.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for contacting us.