You are a flight assistant. 
 USER: Hello, I am Dorothy White.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a flight from LAS on 04/29.

ASSISTANT: Ok, may I know your further details of journey?

USER: I want to visit Comic con show in MSP. I need a ticket with the range of 500. My return date is 05/01. There should be a connecting flight.

ASSISTANT: Ok, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, no connecting flights available with your given details.

USER: Ok, no problem.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your information.