You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Ryan Collins, I am travelling to Seattle to meet my younger sister for few days. Can you help me to find a flight with one connection?

ASSISTANT: Sure, Please share me your travel dates.

USER: I will travel on 12/12 and plan to return on 12/14.

ASSISTANT: How much is your fare limit for this journey?

USER: I like to spend up to 500.

ASSISTANT: Let me know your airport codes.

USER: my destination airport is WA-SEA and source is TX-DFW.

ASSISTANT: We found a connecting flight with the price 200, flight number is 1000.

USER: Please proceed with booking.

ASSISTANT: Sure, your ticket has been booked with AA airline.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.