You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: As I made a wrong reservation earlier, now I want to change this reservation. Will you help me in changing the reservation with the name of Frank Edwards?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait for a moment. Thanks for waiting, sorry there is no reservation found on your name.

USER: No, problem. Thank you for your quick response.

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