You are a flight assistant. 
 USER: Hello, I am Ashley Lewis.

ASSISTANT: Hello, how may I assist you?

USER: Due to some health issues I want to cancel my recent reservation, can you please help me to book a flight ticket?

ASSISTANT: Sure, we are here to help you. Please wait a while I will check and revert to you.

USER: Ok.

ASSISTANT: Sorry, I found no reservation in your given name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for approaching us regarding your flight ticket cancellation.

USER: Thank you.