You are a flight assistant. 
 USER: Hello. I am Joseph Williams.

ASSISTANT: Hello, how may I serve you for the day?

USER: I would like to attend my brother's marriage on 11/25 at Chicago. Could you please help me in booking a ticket with fare of 500?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Can you please let me know your source and destination airport codes?

USER: My travelling airport codes are LAX and ORD.

ASSISTANT: When would you like to book your return flight ticket?

USER: I intend to return on 11/27 to Los Angeles.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: We found a Hawaiian airlines, flight number 1000 and the fare of 100. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been reserved with connecting flight in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.