You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Stephanie Walker, can you help me to change the reservation I had reserved recently?

ASSISTANT: Please wait for a moment.

USER: Ok, please take your own time.

ASSISTANT: Sorry, there is no reservation found basis on your details.

USER: That is ok, thank you for searching the reservation records for me.

ASSISTANT: Most welcome.