You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what services are you seeking from us?

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

ASSISTANT: Sure, can I know your good name please?

USER: I am Frank Hernandez.

ASSISTANT:  When you are willing to travel?

USER: I want to depart on Apr 21 and need to return on Apr 23.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I do not have any other specifications.

ASSISTANT: There is a connecting flight 1020 in American Airlines at the price of 100 with economy class. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for connecting with us.