You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I have to change my reservation due to my planned event got postponed. So please help me with that.

ASSISTANT: Sure, I will help you in changing the reservation. May I know your name please?

USER: Thank you. Please check the reservation with my name Dorothy Wright.

ASSISTANT: Happy to inform you that I have found the reservation. May I know the travelling dates please?

USER: That is great. I have planned my travel dates as Aug 02 and Aug 04.

ASSISTANT: Can I know your airport codes please?

USER: Sure, PHL and LAX are the required airport codes of my locations.

ASSISTANT: Can I know your specifications in airlines?

USER: I am not specific about any airlines but I am looking for direct flight so please make sure that.

ASSISTANT: There is a direct flight with price 200, can I proceed?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1023.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.