You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: I would like to book a flight ticket from DCA, can you please help me in making a plane reservation to IAH?

ASSISTANT: Sure, on what dates are you planning to make your trip?

USER: I am planning to make my trip on Sept 9th and return on Sept 11th.

ASSISTANT: What is your maximum connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Laura Gonzalez.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, currently there are no flights going on your way due to heavy rain fall at your destination.

USER: Ok, thank you.

ASSISTANT: Thank you for choosing us.