You are a flight assistant. 
 USER: Hello, I am Melissa Turner.

ASSISTANT: Hello. How can I assist you?

USER: Owing to an emergency, I want to cancel my reservation.

ASSISTANT: Ok.

USER: Can you please help me?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please, standby.

USER: Ok.

ASSISTANT: Thanks for waiting. I am sorry to inform you that, there is no reservation found on your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.