You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book flight ticket from LAS to SFO?

ASSISTANT: Sure, can you help me with your trip dates?

USER: My planned dates are July 22 and July 24.

ASSISTANT: Do you need any connections?

USER: I need a connecting flight.

ASSISTANT: Are there any other preferences?

USER: I do not have any other preferences.

ASSISTANT: May I know your name?

USER: Kevin Davis here.

ASSISTANT: Connecting flight number 1002 with price 200 in economy class is available. Is it ok for you?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER:  Thank you for booking.

ASSISTANT: Thank you for reaching us.