You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Please wait for a while, I will check and revert to you.

USER:  Ok.

ASSISTANT: Sorry Ruth, there is no reservation found with your given name.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.