You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samuel Miller.

ASSISTANT: How can I aid you at this moment?

USER: Can you help me to change my travel reservation ticket intents?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Ok,Please wait a moment.

USER: I will wait, take your time.

ASSISTANT: There is no previous reservation found in your name.

USER: That's ok, thank you for the information.

ASSISTANT: You are welcome Samuel Miller.