You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I address you?

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

ASSISTANT: Sure, will you please let me know your name?

USER: I am Sharon Lewis.

ASSISTANT: Ok, let me check the current status and revert you.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found active under your name in our data base.

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

ASSISTANT: Thank you for reaching us.