You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Elizabeth King here, actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please stand by I will get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to say no reservation found on your name.

USER: No worries at all, thank you for your information.

ASSISTANT: Thank you for reaching us, have  a nice day.