You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: This is Karen Adams from Dallas. I am planning to visit one of the historical place in HOU, can you please aid me in making an airline reservation from DFW?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are Aug 28th and Aug 30th.

ASSISTANT: Do you like any specifications?

USER: I need a flight with single connection.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Ok, no worries at all. Thank you for your assistance.

ASSISTANT: Thank you so much for choosing us.