You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: I am Eric Brown.

ASSISTANT: How can I help you today?

USER: I would like to travel on 08/16 to 08/18.Can you please check the availability of flight ticket?

ASSISTANT: Sure, may I know your source and destination?

USER: My airport codes are from  PA-PHL to WA-SEA.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with 1 connection.

ASSISTANT: Do you have any price limit?

USER:  Book me a flight ticket under 5000.

ASSISTANT: Ok, please give me some time.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a AA-airline with flight number-1018 that matches your requirement.

USER: You can proceed with this airline.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your service.

ASSISTANT: Thanks for picking us, have a safe journey.