You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please book a flight ticket from DCA to MSP?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: Sure, my travelling dates are Sept 06 and Sept 08.

ASSISTANT: Do you prefer either economy or business class?

USER: I am with any class.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: I am comfortable to travel at any time.

ASSISTANT: Do you have any specific airline preference?

USER: Yes, can you please check for the United airlines?

ASSISTANT: Sure, may I know your connection limit?

USER: Yes, I need a connection in between the journey.

ASSISTANT: Please share your name to proceed further.

USER:  My name is Larry Jackson.

ASSISTANT: We have a flight from Delta airlines, number 1011. Would you like to proceed with the booking?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been reserved in economy class and your outstanding is 100.

USER: Thank you for the help.

ASSISTANT: Thank you for opting us.