You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Unfortunately, I placed a wrong reservation with wrong dates to my family trip, can you please alter my reservation?

ASSISTANT: Yes, I will help you with that.

USER: Thanks.

ASSISTANT: Can you please tell me the name in your previous reservation?

USER: I had booked the ticket on Lisa Wilson name, so search on that name.

ASSISTANT: Sure, please be on hold for a few seconds.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no reservation found with your name  Lisa Wilson in our database.

USER: Oh! Ok. No problem with that, thanks for searching.

ASSISTANT: It's my pleasure. Do you have any other quires?

USER: I will suggest to my friend to contacting you, he was also looking for some help in his booking. No, I did not planned right now.

ASSISTANT: Oh! thank you for choosing our services.

USER: You are welcome.

ASSISTANT: Have a great day.