You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Due to heavy storms in my area, I want to change my existing reservation.

ASSISTANT: Sure, can you provide me your name?

USER: My name is Margaret Parker.

ASSISTANT: Ok, wait a moment let me check the details of your reservation.

USER: Take your own time.

ASSISTANT: Sorry, no reservation found.

USER: Ok, no issues.

ASSISTANT: Thank you for contacting us.

USER: Thank you for providing information.

ASSISTANT: Welcome.