You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you please change my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, can you share your name for checking?

USER: Sure, I had booked my previous reservation with the name Charles Nelson.

ASSISTANT: We found a reservation with your name, can you share your trip source and destination?

USER: Sure, my source and destination airport codes are PHL and PHX.

ASSISTANT: What are your trip dates?

USER: I would like to depart from my source location on 5th Aug and I want to return back by 7th Aug.

ASSISTANT: Do you need any connections?

USER: I prefer single connected flight to travel.

ASSISTANT: Are there any other preferences?

USER: No, I don't have any other specifications.

ASSISTANT: Connecting flight number 1024 with price 200 in economy class is available. Is it ok?

USER: That's perfect! You can proceed for booking the ticket.

ASSISTANT: Your ticket is booked.

USER: Thanks a lot for your help.

ASSISTANT: Thank you for reaching us.