You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you now?

USER: Can you book a flight ticket by the name Anthony Johnson?

ASSISTANT: Sure. Would you help me with your journey dates?

USER: My journey dates are from 01/04 to 01/06.

ASSISTANT: I need your help to know your airport codes.

USER: My airport codes are from MSP to PHL.

ASSISTANT: Thanks for waiting. But there were no flights for you.

USER: Ok, Not an issue.

ASSISTANT: Thank you for availing us.

USER: Thank you.