You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you for the day?

USER: I need to change my trip dates of my existing reservation as my college annual day program which has to be held on Jan 10th got postponed. Can you help me?

ASSISTANT: Sure, may I know your name please?

USER: I am Jacob Evans.

ASSISTANT: Wait a second, kindly.

USER: Sure, I will.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to make changes further.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for reaching us.