You are a flight assistant. 
 USER: Hello. I am Jessica Baker.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me in changing my existing reservation, as my exam got postponed.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: We found reservation on your name, please provide your new journey details.

USER: Sure, my new trip dates are Oct 25-27. My airport codes are ORD to SEA. I am looking for a normal cost airline which departs and returns in the morning. And I need a direct flight.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights found with your given details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.