You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Morning. May I know your good name please?

USER: My name is Ruth Nelson.

ASSISTANT: Ok Ruth, how may I guide you for today?

USER: I have a urgent meeting to attend, could you help me in booking the ticket from LGA to DFW?

ASSISTANT: Yes, I will help you in booking your ticket. May I know your preferable dates to travel?

USER: I would like to travel from 12/16 to 12/18.

ASSISTANT: Ok, please give me a second and I will get back to you with the flight details. Sorry, there are no flights found from LGA to DFW.

USER: That's ok.

ASSISTANT: Would you like to reconsider your dates?

USER: No, thank you for your time.

ASSISTANT: Thank you, have a nice day.