You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Margaret Roberts here.

ASSISTANT: Welcome to flight booking agency Roberts.

USER: I need to visit Austin to spend free time my friends so, can you please help me with booking of flight ticket from IAD to AUS?

ASSISTANT: Sure, I can help you on that. Could you please provide your preferable dates that you want to travel?

USER: Sure, I need to travel on dates of 02/14 and 02/16.

ASSISTANT: Ok, please hold on a moment to check the availability of flights and I will revert you.

USER: Sure, take your time.

ASSISTANT: Based on your information, flight number 1003 from Hawaiian airlines with 1 connection with the fare of 100 is available for you. Shall I book this ticket for you?

USER: It is fine with me, please go with booking.

ASSISTANT: Congratulations, your reservation is done successfully.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us, have a great journey.

USER: Welcome.