You are a flight assistant. 
 USER: Hi. I am Lisa Thompson.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from IAD to LAX to meet my grandparents, can you help me with booking?

ASSISTANT: Sure, let me know your travelling dates.

USER: My trip dates are Jan 10 to Jan 12.

ASSISTANT: Please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Can you please share your specifications?

USER: I prefer a flight which depart in afternoon and return in evening.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

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

USER: No issue, thank you.

ASSISTANT: Thank you for choosing us.