You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am Matthew Roberts.

ASSISTANT: Ok.

USER: I want to change my reservation due to heavy rainfall.

ASSISTANT: Ok. Please hold on for a moment, I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thanks for your time, you have no reservation done earlier to go with further process.

USER: Thank you for your help. jjffdhjfdjhfdddddddddddsjhgf. jhuuiojdgjkdgjkdjkdgjkgd.

ASSISTANT: Thanks for availing us.