You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight ticket from BOS to IAD?

ASSISTANT: Sure, please share your journey dates?

USER: Ok, please book a flight ticket for the dates Mar 7th and Mar 9th.

ASSISTANT: Do you have any specifications?

USER: Ok, please book a connecting flight.

ASSISTANT: Is there any class preferences?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Donna Hernandez.

ASSISTANT: We found a flight in Delta airlines, flight number is 1026 with single connection and price is 200 economy class.

USER: Please book a ticket for me.

ASSISTANT: Your ticket has been booked.

USER: Ok, thank you for the help.

ASSISTANT: Thank you for choosing us.