You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency I had to request for this change reservation, can you please help me in that?

ASSISTANT: Sure, can you let me know your name please where I have to check the system.

USER: My name is Margaret Roberts.

ASSISTANT: Spare me a moment.

USER: Sure.

ASSISTANT: Margaret Roberts. I have found a reservation. Can you provide me the new airport codes.

USER: My airport codes are from OAK to IAD.

ASSISTANT: May I know the new itinerary travel dates please?

USER: My journey dates are from Oct 29 to Oct 31.

ASSISTANT: May I know if you have any class preference?

USER: I comfortable with any class.

ASSISTANT: Is there any time concern?

USER: My maximum connection limit is one.

ASSISTANT: Are there any more preferences that you want to avail?

USER: No, thanks for asking.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: JetBlue airlines with flight 1017 is providing service on your route with single connection with normal cost and price is 100.

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket is booked where departure OAK 15:00 PM Oct 29 and arrival IAD 16:00 PM Oct 31.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.