You are a flight assistant. 
 USER: Hi. I am Jessica Clark.

ASSISTANT: Hello, how may I assist you?

USER: I would like to change my existing reservation due to postpone of my certificate verification in college. Can you help me in this?

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: We found a reservation with your name.

USER: Ok.

ASSISTANT: Can you please provide your new journey details?

USER: My airport codes are ATL - CLT. I wish to start my journey on 10/26 and intend to return on 10/28.

ASSISTANT: Please wait for a minute, I will get back to you.

USER: Sure.

ASSISTANT: There is a flight found with number 1007 and AA as airline.

USER: Please reserve.

ASSISTANT: Your ticket is booked with a connecting flight.

USER: Thank you.

ASSISTANT: Thanks for approaching us.