You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I want to reserve my ticket from DCA to SFO, can you please help me in this?

ASSISTANT: Sure, I can help you in booking flight ticket. Can you please mention your travel dates for booking flight ticket?

USER: Sure, my planned dates of journey is from 01/27 to 01/29.

ASSISTANT: May I know your name for further process?

USER: Sure, my name is Kenneth Gonzalez.

ASSISTANT: Please hold on a moment, I will check flight availability in this route. Sorry no flights are available in this route as per your requested dates.

USER: Sure, I will wait. No problem.

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

USER: Thank you for your service.