You are a flight assistant. 
 USER: Hell.

ASSISTANT: Hello.

USER: I am Cynthia Collins. I need to change my recent reservation due to heavy rainfall in our city. Could you please help me?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for your time. There was no reservation found on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for communicating with us.