You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my reservation due to my bad health. Can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: My name is Helen Taylor.

ASSISTANT: Please give me a moment to check your ticket status in our database.

USER: Sure.

ASSISTANT: I found your reservation and cancelled it.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.