You are a flight assistant. 
 USER: Hello, I am Robert Lee.

ASSISTANT: Hello, how may I serve you today?

USER: I need to fly from AUS to EWR to meet my friend, can you please help me to book a flight ticket?

ASSISTANT: Sure, when are you willing to travel?

USER: My journey dates are 06/04 to 06/06.

ASSISTANT: Do you have any price limit?

USER: My price is 1000.

ASSISTANT: We do not found any flights running in your desired routes.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us. Have a nice day.