You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your name?

USER: I am Susan Hill.

ASSISTANT: Susan, how can help you?

USER: Can you help me in booking a ticket from SFO on 10/27?

ASSISTANT: Sure.

USER: My destination airport code is BOS with the return date 10/29.

ASSISTANT: Let me check.

USER: Ok.

ASSISTANT: Sorry, no flight's found on your preferred dates.

USER: No issues. Thank you for your time.

ASSISTANT: Thank you for reaching us.