You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you now?

USER: Please reserve a seat on my name Patrick Evans to Los Angeles.

ASSISTANT: Sure, to reserve a seat I need your travel dates?

USER: Ok, the travelling dates are 04/03 and 04/05.

ASSISTANT: Ok, may I know your origin airport code?

USER: Sure, San Francisco, SFO is the boarding place.

ASSISTANT: Ok, help me with Los Angeles airport code?

USER: To attend the boss son's wedding, I will travel to Los Angeles, LAX.

ASSISTANT: Hawaiian airline plane is available for you at present with a fare of 100, are you ok with this flight?

USER: Yes, I feel comfortable to travel.

ASSISTANT: Ok, your booking has been successful with 1000 flight.

USER: Thank you for your assistance.

ASSISTANT: Thanks for availing us to serve you better, have a safe journey.