You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Rachel Turner.

ASSISTANT: By what way can I serve you now?

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 reservation. Can you help me with it please?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait, let me check your reservation status.

USER: Ok.

ASSISTANT: Thanks for waiting.

USER: That's ok. Thank you for the response.

ASSISTANT: Sorry Rachel Turner, there is no active reservation found on your name to change it.

USER: Ok, thank you for the response.

ASSISTANT: Thanks for your presence.