You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Edward Jones here.

ASSISTANT: How can I assist you today?

USER: I want to book a flight to attend my niece's birthday, can you help me in finding a flight from LGA - DEN?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates for this journey will be from 06/08 to 06/10.

ASSISTANT: Please give me a moment.

USER: Ok, I'm waiting for your response.

ASSISTANT: Thanks for waiting, there is no flights available under your preferable details.

USER: Ok, no issues with it. Thank you for checking anyways.

ASSISTANT: Welcome, have a great day.

USER: Most welcome.