You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Please help me to change my recent reservation.

ASSISTANT: Sure, I am here to help you with that one.

USER: Thank you.

ASSISTANT: Can I know your name for checking your previous reservation?

USER: I am Amanda Martin.

ASSISTANT: Please allow me a moment to check it.

USER: Ok.

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

USER: Oh! It may not be booked properly due to come technical issues while booking. Anyway, thank you for your time.

ASSISTANT: You are most welcome and thank you for reaching us.