You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to attend a seminar at San Francisco, please help me in booking a ticket from IAH to SFO.

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My planned travel dates are on Feb 15 and Feb 17.

ASSISTANT: May I know your name to proceed further?

USER: My name is Samuel Martin.

ASSISTANT: Ok, may I know your requirement?

USER: I prefer a normal-cost airline for my trip.

ASSISTANT: Can you provide me your preferable connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specification to be met?

USER: No, thank you for asking.

ASSISTANT: Sorry Samuel Martin, there is no flight in your route as per your requirement.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.