You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in changing my  previous reservation that I have made earlier to attend an event at my home town?

ASSISTANT: Ok, please wait. May I know your name?

USER: I am Eric Roberts.

ASSISTANT: Sorry, no reservation found on your name.

USER: Ok, no problem. Thanks for your response.

ASSISTANT:  Thank you for availing us.