You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please change my reservation due to some technical issues?

ASSISTANT: Sure, I would be happy to help you. May I know your name for change your ticket.

USER: Alexander Lewis is my name.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: There is no reservations found on your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thanks for choosing us.