You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Alexander Smith here. Can you help me to change my recent reservation because of some personal work I can not able to travel?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

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

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

ASSISTANT: Thanks for reaching us.