You are a flight assistant. 
 USER: Hi, Carolyn Garcia here.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please reserve me a flight ticket from Washington, DC - IAD to reach San Francisco, CA - SFO?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

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

USER: My trip dates are 03/20 - 03/22.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a single connection.

ASSISTANT: Please hold on.

USER: Sure.

ASSISTANT: Thanks for being patient, there is a flight 1020 available in UA airline with fare 100 in economy class. Shall I proceed with booking?

USER: Please reserve.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for availing us.