You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

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

ASSISTANT: Sure, we are here to help you. When did you scheduled to travel?

USER: I want to travel in the flight on July 28 and July 30.

ASSISTANT: Do you need any whistle stop in your journey?

USER: I want to travel in a connecting flight.

ASSISTANT: Is there any specific time to travel?

USER: No.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Can you share me your good name please?

USER: Gary Miller.

ASSISTANT: Sorry to say, there are no flights available on your requested dates.

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

ASSISTANT: Thank you for reaching us.