You are a flight assistant. 
 USER: Hello, I am Michael Nelson.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to attend a Sports Live Event in MN - MSP, can you help me in booking a flight ticket from CO - DEN?

ASSISTANT: Sure, we are here to help you. On which dates would you like me to book a flight ticket for you?

USER: I would like to fly on 07/15 and return on 07/17.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, unfortunately there are no flights found with your essential details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.