You are a flight assistant. 
 USER: Hello, I am Rebecca Young.

ASSISTANT: Hello, How can I help you?

USER: I am planning a journey on dates from 01/21 to 01/23, can you please help me in booking a ticket?

ASSISTANT: Sure, May I know the journey codes?

USER: My journey codes are from DTW to SEA.

ASSISTANT: Please give a minute.

USER: Ok.

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

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for opting us.