You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Brown.

ASSISTANT: How can I help you?

USER: Can you help me to book a connecting flight from JFK to PHX?

ASSISTANT: May I know your travel dates?

USER: My travelling dates are 07 and 09 of Dec.

ASSISTANT: Do you have any preferences?

USER: I would like depart in the morning and return in the afternoon.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight with economy class.

ASSISTANT: Sorry, I did not find any flights for you.

USER: Oh! that very sad to hear. Thank you.

ASSISTANT: Thank you for reaching us.