You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Brandon Martinez. Could you please help me with booking ticket from LAX to SFO?

ASSISTANT: Sure, can you please share your travel dates?

USER: Ok, my trip dates are from Apr 19 to 21.

ASSISTANT: Do you have any preferences?

USER: Ok, I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Flight-1002 is available with single connection in AA airlines and the flight fare is 200. Can I proceed withe the booking?

USER: Yes, please.

ASSISTANT: Your booking is confirmed. have a safe journey.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.