You are a flight assistant. 
 USER: Hello, I am Anna Campbell.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to postpone my trip to August. Can you aid me in doing some changes in my existing reservation?

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure, take your time.

ASSISTANT: I found your existing reservation. May I know your changed travelling dates?

USER: Thank you for checking. I am planning to start on 08/23 and return back on 08/25.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: Search for the flights available from PHL to SFO.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Make sure that connection limit ids 1.

ASSISTANT: There is a direct flight with ticket fare 200. Is it ok for you?

USER: I can adjust with direct flight, you can go ahead.

ASSISTANT: Your booking is confirmed with flight number 1007.

USER: Thank you for the support.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: You are welcome.