You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please make a reservation in economy class to attend a meeting in Minneapolis?

ASSISTANT: Sure, please share me your trip dates.

USER: My journey dates are on May 2nd and 4th.

ASSISTANT: Is there any time concern for you?

USER: Yes, my return time must be in the evening.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a direct flight.

ASSISTANT: Please share me your source airport code.

USER: My source airport code is BOS.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Richard Harris.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem.

ASSISTANT: Thank you for opting us.

USER: Thank you.