You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I heard that Delta airlines is not providing good service to the costumers, so I will be changing my reservation. Can you help me?

ASSISTANT: Ok, yes I will help you. Can you mention the name on which reservation is done to check in our database?

USER: Myself Kimberly Anderson.

ASSISTANT: Yes, Anderson I could not find any reservation in our database.

USER: Oh! my assistant would have cancelled my reservation, and didn't inform me yet. Thank you for your assistance.

ASSISTANT: Ok, fine.Do you have any other queries?

USER: No, Thanks for asking.

ASSISTANT: Ok, fine thank you for contacting our service.

USER: You are most welcome.