You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Stephen King here.

ASSISTANT: How can I assist you?

USER: I have planned a trip with my students to enjoy the holidays in water world in the month of November, so please book an advance flight ticket for me to LAS from my home town BOS?

ASSISTANT: Ok, may I know your travelling dates?

USER: I am planning to move on 11/10 and please book my return ticket also on 11/12.

ASSISTANT: Sorry, no flights found on your preferable dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to go there. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Welcome.