You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Stephanie Smith. I am planning to attend for business trip, can you please book a ticket to Minneapolis, MSP?

ASSISTANT: Sure, may I know your trip dates?

USER: My depart is on 08/09 and return is on 08/11.

ASSISTANT: Can you please provide me your origin airport code?

USER: Source point is Las Vegas, LAS.

ASSISTANT: There is no flight on your details.

USER: Ok.

ASSISTANT: Thanks for choosing us.

USER: Thank you.