You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation due to bad health issues, can you help me with that?

ASSISTANT: Let me know your name to check your reservation?

USER: I am Susan King.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT:  I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok,  no problem. Thank you.

ASSISTANT: Thank you for choosing us.