You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander Phillips.

ASSISTANT: How may I assist you?

USER: Please book a ticket to Charlotte, NC-CLT to attend a meeting?

ASSISTANT: Sure. Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Help me with your source code.

USER: My source code is at Washington, DC-IAD.

ASSISTANT: Can  I have your trip dates?

USER: My trip dates are from 06/06 to 06/08.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not find any flight on your route.

USER: Ok, I will try with another airline.

ASSISTANT: Thank you for  reaching us.

USER: Thank you.