You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Hall.

ASSISTANT: How may I abet you for the day?

USER: My brother's son will be baptized on 05/14, so need to book a flight ticket on 05/13. Can you help me in booking a flight with single connection?

ASSISTANT: Sure, Please share your take off and landing airport codes?

USER: I would like to fly from DEN to MSP.

ASSISTANT: When would you like to return on?

USER: Sure, I will be back on 05/15.

ASSISTANT: I regret that there are no flights available with the given dates due to the weather conditions. Thank you for opting us.

USER: Ok, no issues. Thank you for your time.