You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to book a flight on May 6th to attend a meeting with client at Chicago. Can you book a flight for me?

ASSISTANT: Ok, may I know your airport codes?

USER: My source point is IAH and my destination is ORD.

ASSISTANT: Do you have any return journey date?

USER: I will return on May 8th.

ASSISTANT:  May I know your preferable journey timings?

USER: I am fine with any flight timing.

ASSISTANT: May I know your name please?

USER: My name is Amy Adams.

ASSISTANT: Is there any other requirements?

USER: I prefer a direct flight.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for choosing us.