You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dorothy Clark here.

ASSISTANT: How can I aid you?

USER: I am looking for changing my reservation due to heavy rains. Can you please help me out with that?

ASSISTANT: Sure, I will help you. Please wait a minute.

USER: Thank you, take your time.

ASSISTANT: Thanks for waiting, there is no active reservation on your name.

USER: Oh! No issues. Thank you for the information.

ASSISTANT: Thank you.

USER: Welcome.