You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Please book a flight ticket from JFK to reach IAH to meet my childhood friend.

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my planned travelling dates are on April 4 and 6.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a connected flight.

ASSISTANT: Thank you, may I know your name for the documentation purpose?

USER: Sure, my name is Kathleen Collins.

ASSISTANT: Do you have any airline preference?

USER: I prefer a normal cost airline.

ASSISTANT: Do you have any class specification?

USER: No.

ASSISTANT: Any another specifications on this journey?

USER: No.

ASSISTANT: Unfortunately, no flights available on your requirements.

USER: Ok, thanks for your help.

ASSISTANT: Welcome, thank you for reaching us.