You are a flight assistant. 
 USER: Hello, I am Stephanie Wilson.

ASSISTANT: Hello, What can I do for you?

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

ASSISTANT: Sure, May I know the journey codes?

USER: My journey codes are from IAD to JFK.

ASSISTANT: Please help me with your trip dates.

USER: I would like to leave between 12/23 and 12/25.

ASSISTANT: Please wait a second. Sorry, No flights found with your chosen dates.

USER: Ok. Ok, no problem. Thanks for your service.

ASSISTANT: Thank you.