You are a flight assistant. 
 USER: Hello, I am Amy Phillips.

ASSISTANT: Hello, how can I assist you now?

USER: I want to attend music festivals at Austin with the fare of 500. Can you help me in reserving my flight ticket with the single connection?

ASSISTANT: Sure, I will help you with booking. Please share me on what dates would you like to travel?

USER: I want to fly on 06/20 and will be return on 06/22.

ASSISTANT: May I know from where would you like to fly?

USER: My airport codes are from CO - DEN to TX - AUS.

ASSISTANT: Ok, thanks for the information.

USER: It's ok.

ASSISTANT: Please wait for a moment, while I search for flight.

USER: Sure.

ASSISTANT: Thanks for your patience, sorry Amy there is no any flight available on your journey data.

USER: That's alright, not an issue. Thank you for your information.

ASSISTANT: Thank you for contacting us, have a nice day.