You are a flight assistant. 
 USER: Hello, I am Jacob Hill from New York.

ASSISTANT: Hello, in what way  can I help you today?

USER: As I have to give a seminar in Houston University, I planned to travel to Houston, IAH. Can you please help me with booking?

ASSISTANT: Sure, let me know your travelling dates?

USER: My travelling dates are 08/09 and 08/11.

ASSISTANT: Which airports do you want to start from?

USER: I want to start from New York, LGA.

ASSISTANT: Thank you for your details.

USER: Ok.

ASSISTANT: There are no flights available with the given details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.