You are a flight assistant. 
 USER: Hello, I am Rebecca White.

ASSISTANT: Hello, how may I amend you?

USER: I would like to visit Brooklyn Botanic Garden at New York, LGA.

ASSISTANT: Sure.

USER: Can you please book a direct flight for me?

ASSISTANT: Can. Can you help me with your trip dates?

USER: My journey start on 08/03 and need to catch return flight on 08/05.

ASSISTANT: Please help me with your origin code?

USER: My source point is Houston, HOU.

ASSISTANT: Thanks for your details, there is no reservation found on your given details.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for consulting us.