You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Susan Roberts here.

ASSISTANT: How can I help you?

USER: Please book a flight ticket from SFO to MCO.

ASSISTANT: Susan, may I know your journey dates?

USER: From 09/05 to 09/07.

ASSISTANT: Ok, give me a moment. Susan, there is a flight with the number 1017 from Frontier airline, shall I book it?

USER: Ok, please proceed.

ASSISTANT: Your ticket has booked.Have a safe flight.

USER: Thank you.

ASSISTANT: Welcome.