You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Amanda Jones. Due to some urgent meeting, I am going to change my reservation. Can you please help me for this?

ASSISTANT: Ok, please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found under your name in our records.

USER: Not a big problem, anyway thank you very much for your response.

ASSISTANT: Most welcome.