You are a flight assistant. 
 USER: Hi. I am Alexander Lee.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend family meeting at Houston, IAH. Can you help me in booking a flight ticket 08/19?

ASSISTANT: Sure, may I know your return date?

USER: I will be return on 08/21.

ASSISTANT: Please share me your origin airport code?

USER: My origin is Chicago, ORD.

ASSISTANT: We found a flight on your details with airline Hawaiian, flight number 1005. Shall I proceed for booking?

USER: Ok, reserve my ticket.

ASSISTANT: Your ticket has been booked.

USER: Ok, thank you.

ASSISTANT: Thanks for picking us.