You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Myself Jonathan Martinez,there is a flight ticket from DEN to SEA. Can you help?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable departure and return dates of travelling?

USER: Ok, please book for the dates July 8 and July 10.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Ok, please take your time.

ASSISTANT: We regret to inform you that there are no flights found on your route with your planned dates of travelling.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us, have a great day.