You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Samuel Moore. I would like to change my existing reservation due to postpone of my event. Could you please help me?

ASSISTANT: Samuel Moore, I am glad to help you. Please wait a moment while I check further?

USER: Sure.

ASSISTANT: Samuel Moore, I found reservation as active in our database. Can you please help me with the airport codes?

USER: My airport codes are EWR and SEA.

ASSISTANT: Please share your trip dates.

USER: My travelling dates are Aug 27 and Aug 29.

ASSISTANT: Do you have any connection limit preference?

USER: I need a break in between the journey.

ASSISTANT: Samuel Moore, regret to inform that there is no flight available for the given dates.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for connecting with our agency.