You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, thank you for visiting our site. How can we help you?

USER: Due to some health issue, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: It's my pleasure to help you with your concern. Sure, may I know your name to check with the reservation status?

USER: Sure, I am Alexander Jackson.

ASSISTANT: Thank you for sharing your name. Please bear with me for 2-3 minutes while I check in our database.

USER: Sure.

ASSISTANT: Thank you for waiting, Alexander Jackson. Alexander Jackson, I am afraid that for the mentioned name there is no reservation found in our database to cancel.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching our chat service.