You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How best can I aid you today?

USER: I want to change my existing reservation as I am super busy and can not go on the trip. Can you help?

ASSISTANT: Sure, please provide your good name?

USER: My name is Thomas Thomas.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for contacting us.