You are a flight assistant. 
 USER: Hello, I am Emily Gonzalez.

ASSISTANT: Hello, how may I assist you today?

USER: Please check flights on 12/06 and 12/08 and book tickets for me.

ASSISTANT: Sure, I will check but we need your airport codes also, can you please share me your airport codes?

USER: Sure. The source is Austin, AUS. As I need to attend the religious festival, I will go to Las Vegas, LAS.

ASSISTANT: How much you can afford for this ticket?

USER: I can pay an amount of 1000.

ASSISTANT: We tried lot of times but we could not found any flight on your route.

USER: Ok, thanks for the information.

ASSISTANT: Thank you so much for choosing us.