You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you help me to change my reservation?

ASSISTANT: Sure, let me know your name to check further?

USER: I am Michael Davis.

ASSISTANT: Found reservation, please forward your airport codes.

USER: My airport codes are ATL and DCA.

ASSISTANT: May I know your trip dates?

USER: My travel dates are July 05 and July 07.

ASSISTANT: Do you have any requirements?

USER: I would like to depart in the morning time and an connecting flight.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry, no flights found as per your requirement.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for contacting us.