You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Myself Jason Young. I am looking for a flight from LAS to SEA, can you help me in booking?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, my planned travel dates are Nov 29 and Dec 01.

ASSISTANT: Do you have any airline preference?

USER: Yes, please look a flight for a normal-cost Airlines.

ASSISTANT: Sorry, there is no flight available with your requirements.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, have a nice day.