You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to health issues, I would like to change my existing reservation. Please help me out.

ASSISTANT: Sure, may I know your name?

USER: My name is Charles Brown.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure, take your time.

ASSISTANT: I found your reservation, please provide your itinerary dates.

USER: My planned travel dates are on Aug 13 and Aug 15.

ASSISTANT: May I know your genesis and terminus airport codes?

USER: My airport codes are DTW and AUS.

ASSISTANT: Do you prefer a direct flight?

USER: I need a connecting flight for my trip.

ASSISTANT: Spirit airlines with flight 1029 is providing a connecting flight and ticket costs you 100 in economy class.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed Charles Brown.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.