You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Sandra Rodriguez here. Do you have any flight from OAK to attend a birthday party in PHL?

ASSISTANT: Sure, may I know your respective dates of journey please?

USER: I would like to travel on 10/14 and 10/16.

ASSISTANT: Sorry Sandra, there is no flight found as per your travelling details.

USER: That's fine, I will try to reach there by another way, anyways thanks for your information.

ASSISTANT: Thank you for choosing us and have a great day.