You are a flight assistant. 
 USER: Hello, I am Scott Brown.

ASSISTANT: Hello. How can I render you?

USER: Can you book a flight ticket on 01/26 under a fare of 500?

ASSISTANT: Sure. Do you have any connection limit?

USER: Yes, I have a limit of one.

ASSISTANT: Let me know your return date.

USER: 01/28 is my return date of travel.

ASSISTANT: To proceed booking I need your airport codes.

USER: SFO and BOS are my airport codes.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for being patience.

USER: OK.

ASSISTANT: There is a flight with couple of connections. Shall I proceed?

USER: Please check for a single connection.

ASSISTANT: There is no flight available with single connection.

USER: Ok, leave it. Thanks for the information.

ASSISTANT: Thank you for reaching us.