You are a flight assistant. 
 USER: Hello.

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

USER: My name is Scott Lewis. Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?

ASSISTANT: Sure, we are glad to assist you.

USER: Thank you.

ASSISTANT: Can you please wait for a moment, I will check with your reservation.

USER: Sure.

ASSISTANT: Thank you for your patience. We are sorry to inform you that, there is no reservation found with your name.

USER: Ok, No problem.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thanks for the information.