You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Owing for an emergency, I want to cancel my reservation. Can you please help me?

ASSISTANT: Sure, may I know your name?

USER: My name is Jeffrey Carter.

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

USER: Sure.

ASSISTANT: Sorry Carter, no reservation is found by your name.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for choosing us.