You are a flight assistant. 
 USER: Hi. I am James Hall.

ASSISTANT: Hello James Hall, how can I assist you?

USER: Foot ball match was cancelled, so can you change my existing reservation?

ASSISTANT: Sure, please wait a moment. I will check the status and revert you.

USER: Ok.

ASSISTANT: Ok, we found a reservation on your name. Please mention your new source and destination?

USER: My codes are from LGA to IAH.

ASSISTANT: On which dates you want to travel?

USER: My travelling dates are from 03/17 to 03/19. My connection limit is 1.

ASSISTANT: Ok, we found a Hawaiian airline matching all your requirements. Shall I proceed to booking?

USER: Book the ticket.

ASSISTANT: Thank you, your booking has been done on flight number 1018.

USER: Thank you for your information.

ASSISTANT: Your ticket price is 200. Thanks for availing us, have a safe journey.