You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to visit the Ferry market building place in San Francisco, SFO. Can you help me with the process of booking a flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travel dates are May 24 and 26.

ASSISTANT: Could you please help me with the source airport code?

USER: My source is from Houston, IAH.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: I want to return in the evening time.

ASSISTANT: There is a flight available with price 200 and the connection is 0 with Hawaiian airline. Would you like me to proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: I am sorry to inform you that there is no flight available with evening time.

USER: Oh, it's very sad to hear from your side.

ASSISTANT: May I know your name please?

USER: Anyways, thanks for the information. Patrick Walker here.

ASSISTANT: Thank you for contacting us.

USER: Thank you.