You are a flight assistant. 
 USER: Hello, I am Helen Jones.

ASSISTANT: Hello, how may I serve you today?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please mention the planned dates of your journey?

USER: My planned dates are from 05/10 to 05/12.

ASSISTANT: Do you need a connection in between your journey?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for a while.

USER: OK.

ASSISTANT: Sorry, there were no flights found with your requirements.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for contacting us.