You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Melissa Hernandez. Can you help me to book a flight from DFW on 01/19?

ASSISTANT: Sure Melissa, can I know the return date and destination code please?

USER: I would like to return on 01/21 from OAK.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight in Hawaiian airline with price 100, can I book it?

USER: Proceed with booking.

ASSISTANT: Your ticket has been booked with flight number 1028.

USER: Thank you.

ASSISTANT: Thank you for approaching us.