You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning my bachelor party in LAS, so I want you to book a ticket for me from AUS.

ASSISTANT: Ok, may I now the dates of journey?

USER: I am departing on 02/18 and arriving on 02/20.

ASSISTANT: There is a flight with airline Spirit and number is 1006. Can I book it?

USER: Please book my ticket on the name Mark Robinson.

ASSISTANT: Your ticket is booked. Happy journey.

USER: Thank you for assisting me.

ASSISTANT: Welcome.