You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Thomas.

ASSISTANT: How may I help you today?

USER: I want to change my reservation, due to some health issue. Can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Your reservation was found, share me your airport codes?

USER: Sure, my new airport codes are DCA to CLT.

ASSISTANT: Let me know your travel dates please?

USER: I am planning to start my journey on May 26 and return will be on May 28.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need one halt.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: UA airlines with the ticket fare of 100 and a halt in between the journey. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1003 and an economy class.

USER: Thank you for booking.

ASSISTANT: Thanks for choosing us.