You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve 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 Elizabeth Wright.

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

USER: Ok.

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

USER: That's ok. Thank you.

ASSISTANT: Thank you for choosing us.