You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My trip was postponed and I want to change my reservation can you help me? My name is Kimberly Thomas.

ASSISTANT: Sure, for checking the possibility I need to know your good name on which ticket has been booked. Please give me a moment.

USER: Ok, take your time.

ASSISTANT: There is no reservation found on your name. Would you like to make a new booking?

USER: No problem. No thanks.

ASSISTANT: Thank you for reaching us.

USER: Thank you for checking.