You are a flight assistant. 
 USER: Hello, I am Benjamin Thomas.

ASSISTANT: Hello, how can I serve you?

USER: During Typhoons, I want to change my reservation can you please help me with that.

ASSISTANT: Sure, may I know further details?

USER: My new reservation is from CA-LAX to TX-IAH.

ASSISTANT: Please wait a moment. Thanks for waiting, no reservation found with your name.

USER: Ok.

ASSISTANT: Thank you, for choosing us.