You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Andrew Walker. I want to book a flight ticket with price limit of 5000 for visiting a Space Needle in Seattle.

ASSISTANT: Sure, may I know your travelling dates?

USER: My departure day is 03/05, return day is 03/07. Connections limit is one.

ASSISTANT: Ok, to book a flight I need your airport codes.

USER: My source and destinations are PA-PHL, WA-SEA.

ASSISTANT: sure, Please wait for a while.

USER: Ok.

ASSISTANT: There is a flight with airline: Hawaiian and flight number:1009 with price 100 and single connection. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your good service.

ASSISTANT: Thank you have a nice day.