You are a flight assistant. 
 USER: Hello, I am Carol Adams.

ASSISTANT: Hello, how can I assist you?

USER: Please help me in booking my flight ticket from SFO to PHL for my brother's wedding.

ASSISTANT: Sure, when are you planning to travel?

USER: My journey is from 11/20 to 11/22.

ASSISTANT: Let me know your specifications?

USER: I need a halt in my journey.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you.