You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to visit Atlanta tour with my friends, can you help me with booking?

ASSISTANT: Sure, may I know your travelling airport codes?

USER: My travelling dates are Apr 28 and Apr 30.

ASSISTANT: Noted your travelling dates, can I know your airport codes?

USER: My airport codes are HOU to ATL.

ASSISTANT: Do you need any connecting flight?

USER: I need a connecting flight.

ASSISTANT: Any other specifications needed?

USER: No.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT:  There is a flight with one connection and the price is 100 in United Airlines, can I proceed with the reservation?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved with the flight number 1019.

USER: Thank you.

ASSISTANT: May I know your name?

USER: I am Michael Campbell.

ASSISTANT: Thank you for reaching our service.