You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Anna Edwards. I would like to visit Lady Bird Lake at San Francisco  with my friend, please help me in booking a ticket from MSP to SFO.

ASSISTANT: Sure, may I know how much can you spend for this booking?

USER: I can pay up to 500.

ASSISTANT: Are you looking for an economy class or business class ticket?

USER: I need a economy class flight.

ASSISTANT: On what dates are you planning to travel?

USER: My travelling dates are 01/22 and return on 01/24.

ASSISTANT: Do you need a stop over in the middle of your journey?

USER: I need a stopover in between the journey.

ASSISTANT: At what time do you prefer to travel?

USER: No restriction on time.

ASSISTANT: Ok, please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Sure.

ASSISTANT: Hawaiian airline with flight number 1009 is leaving in the evening with a total tariff of 100. Is that fine?

USER: You can proceed with booking.

ASSISTANT: Your booking has been done in economy class.

USER: Thank you.

ASSISTANT: Thank you for picking us.