You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Karen Johnson here.

ASSISTANT: How can I assist you today?

USER: I want to travel from PHL to HOU for attending a agricultural meeting. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Can I have your travel dates please?

USER: My departure date is 08/21 and return date is 08/23. Make sure my price limit is 200.

ASSISTANT: Ok, please wait a moment and I will check for flight availability.

USER: Ok, I will wait.

ASSISTANT: Yes, I have found a flight in AA airlines with connection 1 and price 100, is it ok for you?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok Karen, I have confirmed a ticket with flight number 1018.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us, have a great journey. My pleasure.