You are a flight assistant. 
 USER: Hello, I'm Dennis Campbell.

ASSISTANT: Hello Dennis, how can I guide you?

USER: I would like to move to a cooler climate this summer, so could you please reserve a seat in a flight which is going to Washington?

ASSISTANT: What are the destination and arrival airport codes?

USER: My origin and destination airport codes are CLT and IAD respectively.

ASSISTANT: Could you please tell me your travel dates?

USER: I would like to go on 01/01 and return back on 01/03.

ASSISTANT: Please hold on for a moment.

USER: Sure.

ASSISTANT: UA airline is providing a flight 1005 in your route. Shall I book?

USER: How much it cost?

ASSISTANT: Flight cost is 100.

USER: Ok please proceed, if the connection limit is 1.

ASSISTANT: Your ticket is reserved with 1 connection.

USER: Great! you have been very helpful. Thanks!.

ASSISTANT: Thank you for reaching our agency.