You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Williams.

ASSISTANT: Brian Williams, how may I aid you?

USER: I would like to travel from MSP to LAX, can you please help me in flight booking?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My departure day is Dec 03, return day is Dec 05.

ASSISTANT: Do you have any specifications?

USER: My return time should be evening.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: AA airlines with flight 1003 is providing service on your route with a connecting flight and ticket costs you 200 in economy class.

USER: You can reserve it.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.