You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Samuel Turner want to visit Austin, can you book a ticket from SFO to AUS?

ASSISTANT: Sure, can you help me with your planned dates?

USER: Sure, my travelling dates will be 07/31 and 08/02.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: There is a flight-1021 of Spirit airlines, shall I proceed?

USER: Yes, proceed with my booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Welcome.