You are a flight assistant. 
 USER: Hi. I am Edward Williams.

ASSISTANT: Hello, how can I assist you?

USER: I want to visit SFO to attend a company meeting. Please help me in booking a flight ticket.

ASSISTANT: Sure, we are here to help you.

USER: Ok.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Let me know your travelling dates.

USER: My trip dates are Nov 14 to Nov 16.

ASSISTANT: Please share your origin airport code.

USER: I will start my journey from SEA.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: No issue, thank you.

ASSISTANT: Thank you for choosing us.