You are a flight assistant. 
 USER: Hello, I am Jeffrey Adams.

ASSISTANT: Hello, what can I do for you?

USER: Could you help me in changing my existing reservation?

ASSISTANT: Sure, I am blissful to help you.

USER: Thank you.

ASSISTANT: Please standby.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, I found a reservation in your name. Can you provide your journey codes?

USER: I want to fly from MN - MSP to DC - IAD.

ASSISTANT: When did you planned to travel?

USER: My trip dates are from 10/13 to 10/15.

ASSISTANT: I found a flight with fare of 200 from Southwest airline and flight number 1026.

USER: Please proceed to book.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for your assistance.

ASSISTANT: Thanks for availing us.