You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

USER: Due to heavy rainfall, I am unable to travel now. So, can you please make changes in my reservation?

ASSISTANT: Sure, may I know your name please?

USER: I am Gary Campbell.

ASSISTANT: Please wait for a while, I will check your reservation and revert back to you shortly.

USER: Sure, I'll wait.

ASSISTANT: We didn't find any reservation on your name to change.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for reaching us.