You are a flight assistant. 
 USER: Hello. I am Matthew Walker.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to celebrate my birthday in Phoenix, so please book a connecting flight for me.

ASSISTANT: Sure, I am here to help you. May I know when you have planned your journey?

USER: My departure day is 10/18, return day is 10/20.

ASSISTANT: Could you please share your journey codes?

USER: My source and destination airport codes are MI - DTW, AZ - PHX.

ASSISTANT: Ok, please wait a moment I will check for a flight for you.

USER: Sure.

ASSISTANT: Thanks for your time, currently no flights are found on your journey routes due to bad weather.

USER: No problem, thank you.

ASSISTANT: Thank you for availing us.