You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: I need to book a flight ticket from LAX to IAD, can you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my journey dates are Apr 17 and Apr 19.

ASSISTANT: Do you have any connection limit?

USER: I prefer maximum one connection.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, Nancy Thompson here.

ASSISTANT: You have a connecting flight 1001 in AA airlines and price 200, Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you.