You are a flight assistant. 
 USER: Hello, I am Cynthia Collins.

ASSISTANT: Hello, what services are you looking for?

USER: I would like to amend my recent existing reservation. Can you please help me with this?

ASSISTANT: Absolutely, I will help you. Did you booked the ticket on the name Cynthia Collins?

USER: Yes, I have booked the ticket on my name itself.

ASSISTANT: Fine. Can you please stay online for a moment? I will check the full details of your past reservation.

USER: You can take your time, I will be online.

ASSISTANT: Apologetic, I checked with your name in our records, here there is no ticket showing on your name in our records.

USER: It's ok. Once again I will check with my brother whether he might cancelled it before.

ASSISTANT: Fine, you can reach us if your concern is not solved. We will try to find a way to solve your issue.

USER: Thank you for your involvement.

ASSISTANT: Welcome, I was gratified to help you. Thank you for consulting us. Have a tremendous day.

USER: You are welcome.