You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jonathan Evans.

ASSISTANT: How can I help you today?

USER: I have a business meeting in Denver, can you help me for booking a flight ticket from EWR to DEN?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My travelling dates are 12/27 and 12/29.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no flights are available on your particular travelling dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Welcome.