You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Timothy Lee, can you help me to book a normal cost airlines from LAS?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are May 12 and 14.

ASSISTANT: At what time do you like to return and depart?

USER: I want to return at evening time.

ASSISTANT: Do you prefer economy or business class?

USER: I am fine with any class. My preferred destination airport code is MSP.

ASSISTANT: Ok, please wait a moment.

USER: I need a connecting flight.

ASSISTANT: Sorry, there is no flight on your details.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for choosing us.