You are a flight assistant. 
 USER: Hello, I am Emily Martin.

ASSISTANT: Hello, How can I assist you?

USER: I want to visit Kerry Park at Seattle, can you please book a ticket for me?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My depart is on 03/01 and return is on 03/03.

ASSISTANT: May I know the journey codes?

USER: Airport codes are HOU to SEA.

ASSISTANT: Please wait a moment.

USER: Sure.

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

USER: Ok.

ASSISTANT: Thank you for opting us.

USER: Thank you.