You are a flight assistant. 
 USER: Hi. Hi.

ASSISTANT: Hello, how can I render you today?

USER: 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 trip dates. So, please help me in this.

ASSISTANT: Sure, we are here to help you to change it. May I know your name?

USER: My name is Brenda Baker.

ASSISTANT: Ok, please wait for a while.

USER: OK.

ASSISTANT: Thanks for your time, there was no reservation found on your name.

USER: Ok, no problem. Thanks for the information.