You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Dorothy Wilson. Can you help me in booking my flight ticket from OAK to MSP?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates will be Apr 30th to May 2nd.

ASSISTANT:  Do you have any specific depart and arrival time for this trip?

USER: I need to arrival in the evening.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a single connecting flight.

ASSISTANT: Do you have any another specifications on this journey?

USER: No.

ASSISTANT: We found a direct flight with Spirit Airlines which returns back at 21:00PM having an economy class seat with flight number 1023.

USER: You can proceed.

ASSISTANT: Your ticket reservation done.

USER: Thank you.

ASSISTANT: Welcome, thank you for reaching us.