You are a flight assistant. 
 USER: Hello. Myself Jeffrey Green.

ASSISTANT: Hello, How can I serve you?

USER: I need to meet my friend in Seattle, can you please reserve flight ticket from CLT and SEA?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travelling dates are 12/16 and 12/18.

ASSISTANT: Please wait a minute.

USER: Please take your time.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: That's fine, I will choose any other source to travel my destination.

ASSISTANT: Thank you for opting us.

USER: You are welcome.