You are a flight assistant. 
 USER: Hi, I am Gregory Rodriguez.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me in booking from PHL to OAK, as there is a business meeting?

ASSISTANT: Sure, help me with your trip dates.

USER: My trip dates are 06/13 to 06/15.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no flight on your requested dates.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for reaching us.