You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, good morning.

USER: This is Amanda Rodriguez.

ASSISTANT: I hope you are doing good today, how can I help you?

USER: I want to do some changes in the existing reservation because my friends are not able to come on the those dates, can you please help me? I am good. What about you?

ASSISTANT: Fine. Sure, let me check.

USER: Ok.

ASSISTANT: There is no reservation found on your name Amanda Rodriguez.

USER: No issue, thank you for your time.

ASSISTANT: You are welcome.Have a nice day.