You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of help are you looking form us?

USER: Can you help me to change my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Rebecca Adams.

ASSISTANT: Please wait a minute, I will check your reservation status and get back to you.

USER: Sure.

ASSISTANT: We found a reservation on your name, can you please share your trip dates?

USER: My trip dates are Apr 13 and Apr 15.

ASSISTANT: May I know your airport codes?

USER: My airport codes are HOU and LAS.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Any other specifications to be met?

USER: No.

ASSISTANT: We found an airline Delta with flight 1009 having a fare 200 with stopover.

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: your reservation has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.