You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER:  I am Amy Thomas want to cancel my reservation due to some health issues. Can you help me in cancelling?

ASSISTANT: Sure, I will help you with that. Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name in our database.

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

ASSISTANT: Thank you for choosing us.