You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my ticket due to my health issue, can you help me with that?

ASSISTANT: Sure, I am happy to help you. Please let me know your name for checking your reservation status.

USER: My name is Kenneth Hernandez.

ASSISTANT: Thank you. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: That's ok. Thank you for your service.

ASSISTANT: You are welcome and thank you for contacting us.