You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Susan Moore.

ASSISTANT: How may I help you?

USER: As my exam is postponed, I want change my reservation. Can you help me?

ASSISTANT: Ok. Reservation found. Please provide your travelling codes?

USER: I planned my trip from MCO to BOS.

ASSISTANT: May I know your intended travel dates?

USER: My travelling dates are 04/23 to 04/25.

ASSISTANT: Please specify flight connections limit?

USER: I need a direct flight.

ASSISTANT: Ok. No flight found with your requirement.

USER: No issue, thank you.

ASSISTANT: Thanks.