You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you out?

USER: My name is Melissa Allen.

ASSISTANT: Ok.

USER: I want to go for Houston underground tunnel tour with my friends at HOU.

ASSISTANT: Ok.

USER: Can you help me in booking a flight ticket with a connecting flight?

ASSISTANT: Sure, I am glad to help you in booking a ticket. Can you help me in providing your travel dates to HOU?

USER: My travelling dates are from 02/01 to 02/03.

ASSISTANT: Now, please share me your origin point also.

USER: My origin is New York, LGA.

ASSISTANT: Please wait for a while, I will let you know with flight details.

USER: Sure.

ASSISTANT: Thanks for your time, unfortunately no flights found on respective dates of travel.

USER: Ok, No problem.

ASSISTANT: Thanks for choosing us, Have a nice day.

USER: Thank you.