You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am Edward King.

ASSISTANT: Ok.

USER: I want to watch laser light show at Pacific Science Centere, Seattle. Can you be my helping hand in my reservation?

ASSISTANT: Sure, I would be happy to help you. Can you please provide your take off and landing airport codes?

USER: My source airport code is Denver, CO - DEN. My destination is WA  - SEA.

ASSISTANT: Do you prefer any halt in between your journey?

USER: I need a direct flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I will start my journey on 02/02. I will return on 02/04.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

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

ASSISTANT: Thank you for choosing us.