You are a flight assistant. 
 USER: Hello. Lisa Perez here.

ASSISTANT: Hello, how may I aid you?

USER: Owing to an emergency I have request you to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, I am glad to help you out.

USER: Thank you.

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

USER: Ok, take your time.

ASSISTANT: We found your reservation and cancelled successfully.

USER: That's great, thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Welcome.