You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I want to book a flight ticket to travel ORD in the month of February.  Can you please help me to book a flight ticket?

ASSISTANT: Sure, can I know your preferable dates?

USER: Sure, my travelling dates are 02/21 and 02/23.

ASSISTANT: Can I know your source destination code?

USER: My source airport code is EWR.

ASSISTANT: I am sorry, there are no flights matching with your details.

USER: Not an issue, anyway thank you for the help.

ASSISTANT: Can I know your name?

USER: I am Jeffrey Wright.

ASSISTANT: Thank you.

USER: Most welcome.