You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, may I know your name to cancel your ticket?

USER: Myself Barbara Perez.

ASSISTANT: Please hold on for a while. Let me check your ticket status in our website.

USER: Ok.

ASSISTANT: Sorry, no reservation is available by your name.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.