You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Stephen Carter.

ASSISTANT: How may I assist you?

USER: I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you help me in my changing reservation?

ASSISTANT: Definitely.

USER: Thank you.

ASSISTANT: Please provide your travelling codes for ticket booking?

USER: My airport codes are from OAK to IAH.

ASSISTANT: May I know travel dates?

USER: My journey dates are from 04/15 to 04/17.

ASSISTANT: Please mention flight connections limit?

USER: I need a halt in my journey.

ASSISTANT: Ok. Ticket is available with flight connections 1, airline is Spirit. Ticket fare is 100 with flight number 1022.

USER: Proceed with my booking.

ASSISTANT: Your new reservation ticket is booked.

USER: Thank you for kind information.

ASSISTANT: Thanks. Have a great day!.