You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a flight ticket from CA to attend a business meeting in TX, can you help me to book a flight ticket with single connection?

ASSISTANT: Sure, may I know your airport codes clearly?

USER: My source and destination airport codes are SFO and AUS.

ASSISTANT: Can I have your planned travel dates please?

USER: Sure, I need to depart on 11/19 and my return date will be on 11/21.

ASSISTANT: May I know your name please?

USER: I am Christoper Nelson.

ASSISTANT: Do you need a connecting flight?

USER: I have already mentioned above.

ASSISTANT: Do you have any other specifications?

USER: No more specifications please.

ASSISTANT: I found an economy class in Delta airlines with fare 100 and it has single connection. Can I book your ticket?

USER: That's fine, you can book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1015.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for choosing us.