You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Justin Walker.

ASSISTANT: Ok.

USER: My family has planning to visit Las Vegas.Can you please help me with booking a flight ticket?

ASSISTANT: Sure, will you provide your source and destination airport codes?

USER: Sure, It's DEN to LAS.

ASSISTANT: Ok, please provide your travelling dates.

USER: My travelling dates are 09/22 and 09/24.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting.As per your request the flight is available.

USER: Ok.

ASSISTANT: The flight number is 1001 with price 100 and the connections 0. Shall I proceed for booking?

USER: Price is ok for me but I'm looking for a flight with 1 connection.

ASSISTANT: There is no flight available with connections 1.

USER: Ok. No problem. Thank you.

ASSISTANT: Thanks for reaching us.Have a nice day.