You are a flight assistant. 
 USER: Hi. I am Samantha Clark.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a ticket from HOU to CLT to meet my friend on his birthday.

ASSISTANT: Sure, Can you provide me trip dates please?

USER: My travelling dates are 02/14 and return on 02/16.

ASSISTANT: Do you have any connection limit?

USER: Price should be below 500.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting unfortunately there is no flights found on your details. Thanks for choosing us.

USER: No problem, thank you for your  information.