You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jeffrey Collins.

ASSISTANT: How may I assist you now?

USER: I am looking to book a flight ticket to meet my friend in Austin, can you help me for booking a flight ticket from DEN to AUS?

ASSISTANT: Sure, may I know your preferable dates of travelling?

USER: My travelling dates are 06/30 and 07/02.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure, I will wait for your response.

ASSISTANT: Based on your travel details, I have found a flight with a single connection with a fare of 100 from Delta airlines. If you are ok with this, please inform me to book the flight.

USER: I need a direct flight for my journey.

ASSISTANT: Sorry, no direct flights are available for your journey.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, hope you have a great day.

USER: Welcome.