You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Can you please change my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, we are gleeful to assist you. Please share your name to check the reservation list.

USER: Sure, my name is Eric Taylor.

ASSISTANT: Ok, please wait a minute I will get back to you with the present status.

USER: Sure, take your own time.

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: Oh! May be I did a wrong booking, thank you anyways.

ASSISTANT: Thank you for approaching us.