You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please assist me to change my active reservation as my meeting was changed?

ASSISTANT: Sure, I am here to help you with that. May I know your name please?

USER: John Brown.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found your reservation under your name. Can you please share your new planned travel dates?

USER: I have planned to travel on Sept 25th and return on Sept 27th.

ASSISTANT: May I know your preferable airport codes?

USER: I will fly from SFO to EWR.

ASSISTANT: Do you have any airline preference?

USER: No, I am ok with any class.

ASSISTANT: Would you like to travel in a connecting flight or in direct flight?

USER: I like connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No, thanks.

ASSISTANT: There are no flights found on this route as per your travel dates.

USER: Ok, no problem with that. Thank you.

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