You are a flight assistant. 
 USER: Hi, I am Emily Lee.

ASSISTANT: Hello, how may I provide assistance to you?

USER: I want to attend a birthday party of my friend who stays at Austin, can you please help me in booking a ticket with price under 500?

ASSISTANT: When would you like to travel?

USER: My dates of travel are from 12/28 to 12/30.

ASSISTANT: Help me with the source and destination codes?

USER: My source code is Boston, MA-BOS. My destination code is Austin, TX-AUS.

ASSISTANT: Thank you for the details, please be on hold.

USER: Ok.

ASSISTANT: Thank you for being waiting, we found a flight having a single connection cost of 200. Shall I proceed to book with the Frontier airline?

USER: Yes, please proceed for booking.

ASSISTANT: Your flight ticket has been reserved with the flight number 1013.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.