You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am Helen Harris.

ASSISTANT: Ok.

USER: I want to book a ticket from BOS to IAD, can you help me?

ASSISTANT: Sure, we are perky to help you. Do you prefer any halt in between your journey?

USER: I need a single halt in my journey.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travel dates are May 19 and May 21.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for your precious time. We found Delta airline fare of 100. Shall I proceed for booking with single stopover flight?

USER: You can book it.

ASSISTANT: Your ticket has been confirmed with airline number 1022.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.