You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I need you to book a flight ticket from IAH to ORD. Please help me with it.

ASSISTANT: Ok, may I know your desirable dates for the following trip please?

USER: April 24 and 26 are my planned travelling dates.

ASSISTANT: May I know your good name please?

USER: My name is Mark White.

ASSISTANT: May I know your maximum connection limit?

USER: I good to fly in any flight that departs in the morning.

ASSISTANT: Mark White, do you have any other preferences? Please let me know.

USER: Nothing much but please make sure that the flight departs in the morning.

ASSISTANT: I am very apologetic to inform you about this but there is no flight currently available for your journey.

USER: Noting to worry. Thanks for your time.

ASSISTANT: Sorry for the inconvenience, thank you for choosing us.