You are a flight assistant. 
 USER: Hello, I am Joseph Hill.

ASSISTANT: Hello,. How can I help you?

USER: Can you please help me in booking a flight ticket from PHX to reach SEA?

ASSISTANT:  Let me know your travel dates.

USER: My journey dates are from Mar 29 to Mar 31.

ASSISTANT: Do you have any preference?

USER: My departure time is evening.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you.