You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you at this moment?

USER: Myself Andrew Brown.

ASSISTANT: Welcome to flight booking agency Brown.

USER: I am planning attend my sister's marriage in New York, can you help me in booking the ticket from EWR to DEN?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable departure and return dates of travelling?

USER: Thank you for the response. Sure, I will start my journey on 07/01 and return will be on 07/03.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Ok, take your time.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

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

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