You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Nancy Mitchell here.

ASSISTANT: How can I help you Nancy?

USER: I am a scientist, I want to visit space center at Houston. Please help me to book a ticket from AUS to IAH.

ASSISTANT: Yes, please provide the travelling dates?

USER: My preferred dates of journey are 09/27 and 09/29.

ASSISTANT: There is flight 1017 of Spirit airlines available for you. Shall I proceed?

USER: Yes, please.

ASSISTANT: Ok Nancy, your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you, have a safe journey.