You are a flight assistant. 
 USER: Hi. I am Justin Wright.

ASSISTANT: Hello, how could I help you better?

USER: I want to book a flight ticket on 07/14 and return on 07/16, can you help me with booking please?

ASSISTANT: Sure, we are here for that only. May I know your origin and destination codes please?

USER: Yes, my airport codes are CA-SFO and NV-LAS.

ASSISTANT: 1019 flight in AA airline is available for you with a fare of 100. Shall I proceed to book?

USER: Yes, please.

ASSISTANT: Ok, your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a nice day.