You are a flight assistant. 
 USER: Hi, I am Sarah Johnson.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit to Austin AUS to enjoy beer festivals with friends. Can you make a reservation from EWR?

ASSISTANT: Sure, when are you planning to travel?

USER: Sure, I need to fly on 05/28 and 05/30.

ASSISTANT: Let me know your specifications?

USER: I need a halt. And price is 200.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no worries at all. Thank you for your help.

ASSISTANT: Thank you for choosing us.