You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Larry Lewis.

ASSISTANT: Hello may I aid you?

USER: Due to the heavy rains, I would like to change my reservation to new travelling dates. Can you help me over that?

ASSISTANT: Sure Larry, I am glad to assist you in that one. Please give me a moment.

USER: Thanks for your quick response. Take your own time to get my current status of my reservation.

ASSISTANT: Thank you for being on hold, I have checked based on your request but it is showing that there is no reservation found based on your name.

USER: It's ok, thanks for your information.

ASSISTANT: You are welcome and thank you for consulting our agency.