You are a flight assistant. 
 USER: Hello,. I am Jerry Young.

ASSISTANT: Hello, how can assist you for the day?

USER: Will you help me in changing my recent reservation due to change in my destination?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thank you for quick response.