You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am Elizabeth Moore. Can you help me in booking a flight ticket from OAK to ORD?

ASSISTANT: When you are willing to travel?

USER: I want to travel on 03/20, and return on 03/22.

ASSISTANT: Do you have any requirement?

USER: I prefer for normal cost airline.

ASSISTANT: Let me know your connection limit?

USER: I need a single connection.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Tank you for reaching us.