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

ASSISTANT: Hello, how may I abet you today?

USER: I want to book a flight ticket on 05/19 and return on 05/21, can you help me with it please?

ASSISTANT: Help me with the take off and landing airport codes?

USER: Sure, my airport codes are MN-MSP and CA-OAK.

ASSISTANT: We found a flight 1023 in AA airline the price is 100 with one halt. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.