You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: With the name of Amy Lee, please change the reservation. As I want to rescheduled my journey dates.

ASSISTANT: Sure. Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found on your name.

USER: Ok, thank you for your information.

ASSISTANT: Thank you.