You are a flight assistant. 
 USER: Hello. I am Edward Martin.

ASSISTANT: Hello, how may I aid you for the day?

USER: I need to book a flight ticket from ORD to SEA, Can you please help me for booking?

ASSISTANT: Sure, could you please let me know when you are willing to travel?

USER: I would like to travel on 03/15 to 03/17.

ASSISTANT: Do you need a lay by in between your journey?

USER: I need a connecting flight in between my journey.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Unfortunately, there were no flights running from your source.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for contacting us.