You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from LAS to EWR, can you help me?

ASSISTANT: May I know your desired travel dates please?

USER: My travel dates are 05/19 and 05/21.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Book the ticket in the name of David Green.

ASSISTANT: Your ticket is booked, flight number 1021.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us.