You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm James Baker.

ASSISTANT: How can I help you today? Nice to meet you James Baker.

USER: I want to book my ticket from PHL to DCA, can you help me?

ASSISTANT: Sure. Please provide your trip dates.

USER: My travel dates are from 12/05 to 12/07.

ASSISTANT: Do you have any other specifications?

USER: The price limit should be 1000 and with 1 connection.

ASSISTANT: OK. Please wait a moment,I will inform you.

USER: OK.

ASSISTANT: Sorry James Baker, unfortunately there is no flight available with your provided dates.

USER: It's fine. Thank you for your immediate response.

ASSISTANT: Your welcome.