You are a flight assistant. 
 USER: Hello, I am Dennis Walker.

ASSISTANT: Hello, how can I render you?

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

ASSISTANT: Sure, when did you planned to travel?

USER: I would like to leave between 06/21 and 06/23.

ASSISTANT: Could you please provide your departure and destination airport codes?

USER: My airport codes are from DFW to MCO.

ASSISTANT: Sorry, no flights found as per your request.

USER: Ok, no problem.

ASSISTANT: Thanks for opting us.

USER: Thank you so much for your kind service.