You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: As my tournament got postponed, can you help me to change my existing reservation?

ASSISTANT: I am here to help you, may I know your name to check your reservation status?

USER: Sure, my name is Raymond Martin.

ASSISTANT: I got your reservation, may I know your preferable dates to go?

USER: Sure, my travelling dates will be 12/07 and 12/09.

ASSISTANT: Ok, let me know your airport codes too.

USER: Yes, I want to fly from DTW to DFW.

ASSISTANT: According to your criteria, there is a connecting flight-1018 with price 100. Shall I book it?

USER: Ok, your booking is done.

ASSISTANT: Ok, booking is done with Southwest airlines. Thanks for reaching us.