You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I support you?

USER: I want to change an existing reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure, I can help you. Please provide your name to check the reservation list?

USER: I am Amanda Wright.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for your valuable time. There was no reservation found on your name.

USER: NO issue. Thank you.

ASSISTANT: Thank you for choosing our service.