You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, what service are you looking from us?

USER: I am Mary Jackson. I am planning to attend my family function at Seattle WA - SEA, can you please book a flight ticket from HOU?

ASSISTANT: Sure, we are here to help you. May I know your planned dates to travel?

USER: Sure, my journey dates are 12/15 to 12/17.

ASSISTANT: Ok, is there any preference in class?

USER: I am comfortable with any class.

ASSISTANT: Please give me a moment to check the availability of flights on your route.

USER: Sure.

ASSISTANT: Sorry, we did not find any flights matching your details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.