You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I am Nicole Hall, want to travel from LAX to DTW. Will you please help me in booking my ticket?

ASSISTANT: On which dates you are looking for flight?

USER: My travelling dates are from 09/05 to 09/07.

ASSISTANT: Sorry Nicole Hall, there is no fight available.

USER: It's ok, thank you for your help.

ASSISTANT: Most welcome.