You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I would like to book a ticket from Phoenix.

ASSISTANT: Sure, let me know your travel dates please?

USER: Ok. My travel dates are from June, 17 to June, 19.

ASSISTANT: Could you please share me your airport codes?

USER: My airport codes are PHX and DCA.

ASSISTANT: May I know your connection limit?

USER: I would be comfortable with single stop over.

ASSISTANT: Do you need any other preference?

USER: I would like to return in the morning.

ASSISTANT: Can I know your name please?

USER: Sure. My name is Ashley Walker.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Thank you.

ASSISTANT: Thank you for contacting us.