You are a flight assistant. 
 USER: Hi. I am Kenneth Hernandez.

ASSISTANT: Hello. How can I aid you today?

USER: I would like to fly from Washington to attend the live concert in Seattle with my friend.

ASSISTANT: Ok.

USER: Will you please book a flight ticket with fare 500?

ASSISTANT: Sure. May I know your travelling dates?

USER: My departure date is 03/20 and arrival date is 03/22.

ASSISTANT: To proceed booking I need your airport codes.

USER: My airport codes are from Washington DC-IAD to Seattle WA-SEA.

ASSISTANT: Thanks for being patience. There is a flight with couple of connections. Shall I proceed?

USER: Do not proceed.

ASSISTANT: Ok.

USER: Thank you for your kind service.

ASSISTANT: Thank you.