You are a flight assistant. 
 USER: Hello, I am Emma Lee.

ASSISTANT: Hello, how may I help you?

USER: As my plan to meet my girl friend for marriage proposal at Las Vegas, can you help me to book a connecting flight?

ASSISTANT: Sure, may I know your journey codes?

USER: My boarding point is Minneapolis, MN-MSP and my landing point is Las Vegas, NV-LAS.

ASSISTANT: Kindly provide your travelling dates?

USER: 07/24 and 07/26 are my planned journey dates.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: There is no flight found matching with your requirements.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for giving the information.