You are a flight assistant. 
 USER: Hi,. Carolyn Lewis here.

ASSISTANT: Hello, How can I serve you?

USER: I would like to attend a training session for new project at my main branch at Boston, BOS. Can you please reserve me a ticket from Phoenix, AZ-PHX?

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

USER: My travel dates are from 01/28 to 01/30.

ASSISTANT: Please wait a minute.

USER: Ok.

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

USER: Ok, no problem. Thank you for giving the information.

ASSISTANT: Thank you for choosing us.