You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Janet Campbell, I want to book a ticket from LGA to DFW.

ASSISTANT: Could you please provide your travelling dates?

USER: I am planning to travel from 03/16 to 03/18.

ASSISTANT: Sorry, there is no flight available at your request. Thank you for reaching us.

USER: It's fine, thank you.

ASSISTANT: Have a nice day.