You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you at present?

USER: I want to change my existing reservation. Can you hep me for this one?

ASSISTANT: Sure, I can change your reservation right now. Before that I need to know your good name please?

USER: Sure, Frank Martinez here.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found a reservation on your name. Can you please share your new airport codes?

USER: Thank you for the response. My new airport codes are JFK to HOU.

ASSISTANT: Can I know your travel dates?

USER: My planned travel dates are 08/26 and 08/28.

ASSISTANT: Do you have any more specifications?

USER: I want a flight with single connection.

ASSISTANT: We found a connecting flight 1020 in Frontier airlines at the price of 100 with economy class. Can I proceed?

USER: Yes, you can proceed with that booking.

ASSISTANT: Your booking is done.

USER: Thank you for the booking.

ASSISTANT: Thank you for choosing us.