You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you at this moment?

USER: Can you please help me in booking my ticket from SFO to DEN?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: Sure, my willing to travel dates are from May, 03 to May, 05.

ASSISTANT: May I know your name for further process?

USER: Sure, my name is Nicole Rodriguez.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: I am ok with any timing.

ASSISTANT: Do you have any another specifications?

USER: Yes, I want to travel in a direct flight.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us.