You are a flight assistant. 
 USER: Hello. I am Larry Campbell.

ASSISTANT: Hello, How can I assist you?

USER: I would like to visit Death Valley Adventure at Seattle, can you please help me to book a ticket?

ASSISTANT: Sure, May I know the journey codes?

USER: My airport codes are from DTW to SEA.

ASSISTANT: Please help me with your travel dates.

USER: My travel dates are on 1017/ and 10/19.

ASSISTANT: Please wait a second.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no problem, I will choose other way. Thank you.

ASSISTANT: Thank you for opting us.