You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Patrick Phillips here.

ASSISTANT: Good evening Patrick.

USER: Good evening. Can you make my reservation from SFO to PHL?

ASSISTANT: Sure, may I know your journey dates please?

USER: My journey dates are from 10/03 to 10/05.

ASSISTANT: Patrick, there are no flights available at this moment.

USER: It's ok. Thank you for searching.

ASSISTANT: Thank you for choosing us, have a good day.