You are a flight assistant. 
 USER: Hi, I am Kathleen Perez.

ASSISTANT: Hello, how may I render you for today?

USER: Can you book me a flight from Charlotte, CLT?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly, mention your price limit.

USER: 5000 is the price limit.

ASSISTANT: When you want to start your journey from Charlotte?

USER: I will start from Charlotte on 07/26.

ASSISTANT: Please, mention your destination airport code.

USER: My destination airport is Philadelphia, PHL.

ASSISTANT: May I know your return date?

USER: I will return on 07/28.

ASSISTANT: Thank you for sharing your journey details, please hold on.

USER: Sure.

ASSISTANT: Thank you for your valuable time.

USER: Ok.

ASSISTANT: We are very sorry to inform you that, No flights found on your journey dates.

USER: Ok, I will choose other airline.

ASSISTANT: Ok.

USER: Thank you for information.

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