You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I respond to your request?

USER: Can you please change my recent reservation details? As I have booked the ticket with wrong dates.

ASSISTANT: Sure, I can change your reservation right now. Before that I need to know your good name please?

USER: Sure, my name is James Roberts.

ASSISTANT: Ok, wait for some time I will check the reservation on your name and get back to you.

USER: Sure, take your own time.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: Oh! May be something went wrong while I was booking the ticket. Thank you anyways.

ASSISTANT: Thanks for reaching us, wish you a nice day.