You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Thomas Lopez.

ASSISTANT: How may I help you?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: We have found your reservation. Can you please tell your airport codes?

USER: I want to travel from MSP to SEA.

ASSISTANT: Please provide your trip dates.

USER: Travelling dates are on Feb 06 and return on Feb 08.

ASSISTANT: Ok, please give me a minute to check.

USER: Sure.

ASSISTANT: Sorry Thomas, on these dates there is no flights available.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Most welcome.