You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Would it be possible to change my reservation, which I have done with my name?

ASSISTANT: Sure, I am glad to help you. Can you please help me with your name?

USER: My name is Rachel Carter.

ASSISTANT: Thank you so much. Please be on hold for a while.

USER: Ok, take your time.

ASSISTANT: Sorry, I have not found any reservation under your name in our database.

USER: Ok, no issues. Thank you for the response.

ASSISTANT: You are welcome and thank you for contacting us.