You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER:  I didn't got window seat due to late check in, can you help me to change my existing reservation?

ASSISTANT: Sure, I will help you.

USER: Thanks.

ASSISTANT: Could you please provide your name to check your reservation status?

USER: Sure, my name is Dennis Allen.

ASSISTANT: Ok Allen, I have found your reservation. Could you please provide your new journey location codes?

USER: That's great, I want to take off from CLT airport and destination airport is EWR.

ASSISTANT: Ok, may I know your preferable dates that you want to travel?

USER: My departure date is 09/24 and please book my return ticket also on 09/26.

ASSISTANT: Ok, please wait a moment to check the flights.

USER: Ok.

ASSISTANT: Based on your information, I have found a flight with 1 connection with the price of 100. Is it ok for you?

USER: Please confirm this flight ticket on my name.

ASSISTANT: Ok, your reservation has been done successfully with flight number 1022.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a great journey.