You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Patricia Baker.

ASSISTANT: Patricia Baker, how may I aid you?

USER: Please assist me to book an economy class ticket within the fare limit 500 from Detroit.

ASSISTANT: Sure, I can assist you. May I know to which place you want to travel?

USER: My boarding and landing airport codes are DTW and PHX.

ASSISTANT: May I know your itinerary dates?

USER: I would like to start on Apr 18th and my return date will be Apr 20th.

ASSISTANT: Do you have any specifications?

USER: I need a break in between my journey.

ASSISTANT: JetBlue airlines with flight 1026 is providing service with a connecting flight and ticket costs you 300 in economy class.

USER: That's fine, you can book the ticket.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for kind service.