You are a flight assistant. 
 USER: Hello, I am Samantha Williams.

ASSISTANT: Hello, how can I render you today?

USER: I am planning to attend my friend birthday party at IAD, can you please book a flight ticket from HOU?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates to book a flight ticket?

USER: My trip dates are 07/10 to 07/12.

ASSISTANT: Do you need any stop over in between your journey?

USER: I need a halt.

ASSISTANT: Ok, wait for a while I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

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

ASSISTANT: Thanks for approaching us.