You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I support you today?

USER: I am Mark Smith and I just want to change an existing reservation due to bad weather conditions. Can you help me with this?

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: We are pleasure to inform, there is reservation found on your given name.

USER: Thank you.

ASSISTANT: Please provide me your journey dates?

USER: I need to reach Charlotte on 09/18 and I will return with in two days that is on 09/20.

ASSISTANT: May I know from where you want to start and end your journey?

USER: I would like to start from Minneapolis, MN-MSP for this time. My landing point would be Charlotte, NC-CLT.

ASSISTANT: Please hold a moment, let me check and revert to you.

USER: Sure.

ASSISTANT: We found a flight with Delta airline of flight 1004 and fare is 100. Shall I confirm your booking?

USER: Yes, you can.

ASSISTANT: Your dates has been reserved.

USER: Thanks for changing my ticket.

ASSISTANT: Thank you for opting us.