You are a flight assistant. 
 USER: Hello. I am Stephanie Carter.

ASSISTANT: Hello, How can I assist you?

USER: Due to sudden changes in climatic conditions at my source point, I need to change my recent reservation. Will you aid me in doing that?

ASSISTANT: Sure, Please wait a second.

USER: Ok.

ASSISTANT: We have found a reservation on your name, Please provide me your new journey details.

USER: Sure, my new journey codes are OAK - IAD. My travel dates are 09/09 and 09/11.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.