You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I assist you today?

USER: I am Charles Martinez I need to cancel my recent reservation due to sudden visitation at my friends house. Can you help me out?

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Ok.

ASSISTANT: Sorry Charles Martinez, no reservation found on your name in our records.

USER: Ok.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Thanks for the quick response.