You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Lopez.

ASSISTANT: How may I aid you today?

USER: I planned to attend for a meeting in SFO, can you please help me to book a flight ticket from MSP?

ASSISTANT: Sure, we are here to make your journey comfort. Please let me know if you need a connecting flight.

USER: I prefer to travel in a direct flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I prefer to travel on Apr 28 and Apr 30.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I would like to return back in afternoon.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.