You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I support you today?

USER: Can you please cancel my reservation due to heavy rainfall at my destination place?

ASSISTANT: Sure, I'll try to help you in cancellation.

USER: Thank you.

ASSISTANT: Can I have your name please?

USER: Lisa Adams here.

ASSISTANT: Ok, please wait a minute I will get back to you with the present status.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, I am very sorry to inform you that there is no reservation found under your name in our database.

USER: That's ok thank you for checking.

ASSISTANT: Thank you for approaching us.