You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: As my brother's marriage got postponed, I would like to change my existing reservation. Can you please help me with that?

ASSISTANT: Sure, can I know the new travel dates?

USER: I would like to travel from 08/25 to 08/27. The airport codes are PHL and MCO.

ASSISTANT: Hold on for a minute.

USER: Make sure that connection is 1.

ASSISTANT: I'm sorry, there are no flights matching your preferences. Can I know your name please?

USER: My name is George Turner. That's ok. Thank you for your help.

ASSISTANT: Thank you, have a good day.