You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I want to give a surprise to my parent's on their wedding anniversary at Seattle, can you help me with booking a ticket on 06/06?

ASSISTANT: Sure, May I know the journey codes?

USER: My landing airport code is SEA and takeoff airport code is HOU.

ASSISTANT: Please help me with your return date.

USER: I Intend to return from Houston on 06/08.

ASSISTANT: May I know your name?

USER: Brandon Smith is my name.

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

USER: No problem. Thank you for your kind service.

ASSISTANT: Thank you for opting us.