You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Justin Parker.

ASSISTANT: How can I help you?

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

ASSISTANT: Sure, I will help you. Please, wait a minute.

USER: Thank you. Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: Welcome.