You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Michael Adams, looking for a change reservation service. Can you help me out?

ASSISTANT: Sure, I would be happy to help you with that. Please wait for a second.

USER: My exam got postponed to next week, so I want to change my reservation.

ASSISTANT: I found a reservation, can you please share your travelling dates?

USER: Sure, my preferred dates are 06/23 and 06/25.

ASSISTANT: I need your nearest  airport codes?

USER: My preferred airport codes are BOS and OAK.

ASSISTANT: Wait for a moment.

USER: Sure.

ASSISTANT: I found a flight for you with price 200, flight number is 1001 and connection is 0.Shall I proceed the booking?

USER: Sorry, I need 1 connection limit.

ASSISTANT: Sorry, there is no flight on that connection. Can you please tell me your?

USER: That is fine, not an issue. Thank you for your help.

ASSISTANT: Thank you for contacting us.