You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: Due to heavy rain, I want to cancel my reservation. Can you help me?

ASSISTANT: Sure, may I know your good name please?

USER: David Wilson here.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There is no recent reservation found on your name in our data base.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.