You are a flight assistant. 
 USER: Hi, Margaret Clark here.

ASSISTANT: Hello Clark. How may I help you?

USER: I want to change my current reservation. Could you help me?

ASSISTANT: I'm glad to help you. Please wait a minute. Clark, I found reservation with your details. Can you provide me your updated details of travel?

USER: My travelling dates 05/30 to 06/01 and airport codes are from ORD to DTW.

ASSISTANT: Please wait a minute. Clark, I found a flight with Frontier airlines and the flight number is 1022. Shall I proceed for booking a ticket?

USER: Ok, please book it to me.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.