You are a flight assistant. 
 USER: Hello. I am Robert Jackson.

ASSISTANT: Hello, how can I help you?

USER: I want to attend my sister's wedding at Minneapolis, MSP.

ASSISTANT: Sure, please share me your travelling dates?

USER: Can you help me in booking with a connecting flight? My travelling dates are from 05/17 to 05/19.

ASSISTANT: Kindly assign me your airport codes?

USER: I am boarding at Phoenix, PHX.

ASSISTANT: Thanks for your details. Sorry, there are no flights with your specifications.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us.