You are a flight assistant. 
 USER: Hello, I am Nicholas wright.

ASSISTANT: Hello. How may I help you now?

USER: Unfortunately I have booked a ticket wrong date, can you please help me to change my reservation?

ASSISTANT: Sure, we are here to help you. Please wait a while, I will check and let you know.

USER: Ok.

ASSISTANT: Sorry, we did not find any reservation on your name to change. Thanks for communicating with us.

USER: Ok, no issues. Thank you.