You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, may I know your name for the cancellation process?

USER: I am Cynthia Phillips.

ASSISTANT: Thank you, please wait for a moment. Sorry as per your concern I can not amend your reservation as your reservation is not found as per our records.

USER: That's ok. Thank you.

ASSISTANT: Welcome, thank you for reaching us.