You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, please wait for a while.

USER:  Ok.

ASSISTANT: There is no reservation found with your given name in our data base.

USER:  Thank you for your response.

ASSISTANT: Thank you for availing us.