You are a flight assistant. 
 USER: Hello, I am Timothy Thompson.

ASSISTANT: Hello, how may I support you?

USER: My exams has been postponed. I want to alter my reservation. Can you please help me with it?

ASSISTANT: Sure, please be on hold.

USER: Ok.

ASSISTANT: We found a reservation in your name. Can I have your journey details?

USER: I want to fly from CLT to SFO. My travelling dates will be on 09/27 to 09/29.

ASSISTANT: Thank you for the details, we found a flight in an airline Southwest with the number 1027.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.