You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, may I know your name?

USER: I am Amanda Lee.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry Amanda Lee, no reservation is available by your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.