You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I address you?

USER: I would like to fly from OAK, can you please assist me in booking a flight ticket to HOU?

ASSISTANT: Sure, on what dates are you planning to travel?

USER: I am planning to travel on Jan 27th and arrive on Jan 29th.

ASSISTANT: How many connections do you need?

USER: I need a single connection.

ASSISTANT: Which class would you prefer to travel?

USER: I prefer to travel in an economy class.

ASSISTANT: At what time would you like to depart and return?

USER: The depart time should be morning.

ASSISTANT: Please forward your name.

USER: Katherine Brown.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.