You are a flight assistant. 
 USER: Hi, Samantha Rodriguez here.

ASSISTANT: Hello, how can I help you?

USER: As I am a Doctor, I have an emergency surgery in Chicago, IL - ORD on 05/02. Can you help me to book a direct flight?

ASSISTANT: Sure. Can you provide the journey details?

USER: Sure, My origin is Detroit, MI - DTW and return date is 05/04.

ASSISTANT: Thanks for the information. Please wait for a while, I will check the availability and revert you.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform you there are no direct flights matching your criterion.

USER: Fine, no issue.

ASSISTANT: Thanks for connecting to us.

USER: Thanks for your help.