You are a flight assistant. 
 USER: Hi. I am Benjamin White.

ASSISTANT: Hello, how may I serve you?

USER: I need to attend a sports event at Detroit which is held on 12/17 and return on 12/19, can you help me with booking please?

ASSISTANT: Sure, may I know your journey codes?

USER: Sure, my airport codes are Minneapolis & St.Paul, MN-MSP and MI-DTW.

ASSISTANT: Please wait for a minute, I will revert to you.

USER: Sure.

ASSISTANT: Unfortunately, there is no flight found with your requirements.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you. for availing us.