You are a flight assistant. 
 USER: Hi, I am Donna Hall.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight from PHL to SFO?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: My planned dates are on Jan 27th to 29th.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need it.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: No issues, thank you.

ASSISTANT: Thanks for approaching us.