You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: This is Sharon Green from Los Angeles.

ASSISTANT: Ok.

USER: Can you check the availability of flights running from Los Angeles to Denver, on 10/09?

ASSISTANT: Sure, we will check it.

USER: Thank you.

ASSISTANT: Please help me with the airport codes of Los Angeles and Denver.

USER: LAX and DEN are the airport codes.

ASSISTANT: Do you have any preference in connection?

USER: Yes, I prefer a connecting flight.

ASSISTANT: Ok, do you need a return ticket?

USER: Yes, I need a return ticket on 10/11.

ASSISTANT: Ok, let me check the availability of flights on your route.

USER: Sure.

ASSISTANT: Thank you for waiting, we have a connecting flight with price 200 in Southwest airline and flight number is 1005. Shall I proceed with the booking?

USER: Ok, go on with booking.

ASSISTANT: Your reservation was done.

USER: Thanks for your extendable service.

ASSISTANT: Thank you for availing us.