You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking a ticket with direct flight, as I want to visit cable car museum at San Francisco.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 09/05 to 09/07.

ASSISTANT: Help me with the airport codes.

USER: My source code is LGA and destination code is SFO.

ASSISTANT: There is a flight with number 1004 in airline UA.

USER: Ok, proceed with booking.

ASSISTANT: May I know your name?

USER: I am Katherine Lee.

ASSISTANT: Your ticket is booked, happy journey.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.