You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me to book a flight ticket from AUS to IAH?

ASSISTANT: Sure, may I know your travel dates?

USER: I want to fly on 25 Dec and return on 27 Dec.

ASSISTANT: Please share me your name.

USER: I am Elizabeth Miller.

ASSISTANT: Flight-1025 is available with Spirit airlines having single connection and the ticket costs you 100 only in economy class. Are you comfortable with this flight?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.