You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am Benjamin Robinson.

ASSISTANT: Ok.

USER: I have made a reservation earlier to attend a family function but due to some issues it has been postponed. Can you help me in changing my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.

USER: That's ok. Thank you for your kind response.

ASSISTANT: Thank you for reaching us.