You are a flight assistant. 
 USER: Hi. I am Jerry Brown.

ASSISTANT: Hello. Jerry Brown, how may I help you?

USER: I want to visit Great wheel located in Seattle. Please help me out in ticket booking.

ASSISTANT: Yes, I am here to help you. Please help me with your journey dates and airport codes.

USER: Sure, airport codes are DFW and SEA. My preferred journey dates are 04/03 and 04/05.

ASSISTANT: Wait for a moment please.

USER: Sure.

ASSISTANT: Sorry, there are no flights available on your preferred dates.

USER: That's ok, thank you for your service.

ASSISTANT: Thank you for approaching us.