You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I aid you today?

USER: Please aid me in changing my recent reservation, as my exams got postponed.

ASSISTANT: Sure, we will aid you in changing your reservation.

USER: So, I want to change my reservation with the name of Stephanie Carter.

ASSISTANT: May I know your name? Ok, Stephanie Carter. Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: We are glad to notify you that we found reservation with your name. Can you provide me your journey details?

USER: My travelling dates are from 09/09 to 09/11. From PHL to Houston, HOU.

ASSISTANT: There is flight found with the fare of 800 with a connecting flight.

USER: Make sure the price limit to be 500.

ASSISTANT: There is no flight found in your budget.

USER: No problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for aiding me.