You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Can I know your name please?

USER: Myself Helen Martinez.

ASSISTANT: Sorry, there ius no active reservation found with your name in our records.

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

ASSISTANT: Most welcome.

USER: Welcome.