You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: This is Rebecca King.

ASSISTANT: How may I help you today? Nice to meet you Rebecca King.

USER: Please book a ticket from SEA - DTW as I will spend my summer vacation in Dallas because it has great hill stations. These are my journey dates 03/14 and 03/16.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Based on your provided information, there is no flight for you, sorry for the inconvenience.

USER: Ok, that's not a problem.

ASSISTANT: Ok, thank you for consulting us.

USER: Thank you for your information.