You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: Suddenly, my daughter's project presentation is cancelled, and not yet rescheduled. Can you help me out in cancelling the flight ticket?

ASSISTANT: Sure.

USER: Sorry for inconvenience, its about to change my reservation.

ASSISTANT: Ok, to proceed further may I know your name?

USER: Please, check the details on Angela Robinson.

ASSISTANT: Ok, please be on hold. We are happy to inform you that, there is a reservation found in your name.

USER: Actually, my daughter presentaion is scheduled again that why I turned into change the reservation. That's great, please proceed it with changing the reservation.

ASSISTANT: Can I have your new depart and arrival codes?

USER: My new location airport codes are from LGA to IAH.

ASSISTANT: May I know your travelling dates please?

USER: My probable travelling dates are from 11/03 till 11/05.

ASSISTANT: Is there any other restrictions to be met?

USER: Yes, ensure that the connection limit should be 1, because my daughter's friend meets in middle.She also booked with the same flight.

ASSISTANT: Ok, please wait. I will let you know the information of flights.

USER: Ok.

ASSISTANT: There is a SouthWest airlines with the fare of 100 and the flight number is 1028 matching to your preferences.

USER: Please, proceed it.

ASSISTANT: Your flight has been booked with single connection.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.

USER: Welcome.