You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Planning to travel from IAH to OAK, help me in booking a flight?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travelling dates are July 28 to 30.

ASSISTANT: May I know your connection limit?

USER: I need 1 connection limit.

ASSISTANT: Do you have any specifications?

USER: I want to return in afternoon.

ASSISTANT: May I know your name?

USER: I am Emily Thomas.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry Emily Thomas, no flights are available from OAK in the afternoon.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us.