You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel Collins.

ASSISTANT: How may I guide you today?

USER: I am planning to attend a live music concert in OAK, can you please find a flight from PHL?

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

USER: My preferable travel dates are from July 18 till July 20.

ASSISTANT: Do you have  any specifications?

USER: Yes, I need one halt in my journey.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That'a ok, no issue. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us.