You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Timothy Evans.

ASSISTANT: Ok.

USER: I want to attend my sister's wedding at Chicago, ORD. Can you help me in booking with a direct flight?

ASSISTANT: Sure, I am here to help you. May I know your source code please?

USER: I am boarding at Seattle, SEA.

ASSISTANT: Ok, please help me with your planned travel dates.

USER: Sure. My planned dates are from 06/23 to 06/25.

ASSISTANT: Ok, please wait a minute I will check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Sorry to say that we did not find any flights with your requirements.

USER: Ok, Not an issue.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for the information.