You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, We are here to assist you. Can I know your travelling dates?

USER: October 9 and 11 are my planned travelling dates.

ASSISTANT: Do you need any break?

USER: No, I would like to reach my destination in direct flight.

ASSISTANT: May I know your name?

USER: My name is Justin Robinson.

ASSISTANT: Is there any other specifications?

USER: Nothing much to state.

ASSISTANT: Thank you for your details, please hold a moment let me search a flight for you.

USER: Sure, I will wait.

ASSISTANT:  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.