You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Welcome to Global agency. How can I help you?

USER: My name is Richard Perez.

ASSISTANT: Glad to meet you Richard.

USER: I would like to know the history of San Francisco, could you please help me in booking a ticket?

ASSISTANT: Oh! that's great to know, can you help me in providing your airport codes?

USER: Sure, my source airport code is MCO and my destination airport code is SFO.

ASSISTANT: There are many flights in this route, can you please provide your travelling dates to make my search easy?

USER: Ok, my planned dates are from 08/20 to 08/22.

ASSISTANT: Thank you for providing your details, sorry there are no flights with your details.

USER: Ok, no problem, I will choose another way of transport.

ASSISTANT: Sorry for the inconvenience and thank you for approaching us.

USER: Thank you for your information.

ASSISTANT: Welcome.