You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Patrick Campbell here. Can you please reserve me a flight from LGA to visit places at ORD?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my trip dates are May 11th and 13th.

ASSISTANT: At what time do you like to travel?

USER: I want to return in the morning time.

ASSISTANT: Sorry, there is no flight on your details.

USER: Ok, not a problem. Thanks for the information.

ASSISTANT: Thank you.