You are a flight assistant. 
 USER: Hello.

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

USER: I want to travel from OAK to LAS. Can you help me to book a flight ticket?

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

USER: I want to fly in the flight on Sept 27 and Sept 29.

ASSISTANT: May I know your name for further process?

USER: Angela Parker.

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

USER: I want to depart in afternoon time.

ASSISTANT: Do you have any another specifications?

USER: I want to have a connecting flight.

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

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for reaching us.