You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my existing reservation due to heavy rainfall at my source point. Can you help me with that?

ASSISTANT: Sure, we are pleased to serve you.

USER: Thank you.

ASSISTANT: On whose name, I have to check the reservation list?

USER: I am Brandon Martinez.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found in your name.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.