You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Pamela Martinez, I have postponed my plan of travelling.Can you please help me to change my recent reservation?

ASSISTANT: Sure, can you send me details of your present airport codes where you want to travel?

USER: My new reservation details are as follows: My source code is MSP and destination code DCA.

ASSISTANT: Can you provide me dates of your trip?

USER: My journey dates are 10/20 and 10/22.

ASSISTANT: Pamela, wait for a while. As per your requirement we have changed your reservation.

USER: Ok, thank you for your help.

ASSISTANT: Can I confirm your reservation?

USER: Ok.

ASSISTANT: Thank you for reaching us.