You are a flight assistant. 
 USER: Hi. Donna Martin here.

ASSISTANT: Hello. How may I assist you?

USER: I would like to book a ticket from SFO to PHX, can you please help me with that?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: The travel dates are from 01/02 to 01/04.

ASSISTANT: Do you have any specifications?

USER: I would like to depart during evening time.

ASSISTANT: Donna Martin, no flights has been found on your requirement.

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

ASSISTANT: Thank you for choosing us.