You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Deborah Wright. I am planning to attend a Cultural Event in Seattle, could you please help me in booking a flight ticket?

ASSISTANT: Sure, I will help you. Could you please help me with your travelling dates?

USER: I want to fly on 09/17 and return on 09/19.

ASSISTANT: Ok. May I know from where you are willing to travel?

USER: My source is Dallas TX - DFW and destination code is WA - SEA.

ASSISTANT: Ok. May I know your price range?

USER: I can afford up to 1000.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Sorry Deborah Wright, no flights found on your requested travelling dates.

USER: Not an issue. Thank you for your information.

ASSISTANT: Thank you for approaching us, have a nice day.