You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a ticket from HOU to PHX. Could you book a ticket?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates.

USER: Travelling dates are Jan, 27 and Jan, 29.

ASSISTANT: May I know your name?

USER: My name is Cynthia Adams.

ASSISTANT: Do you have any other specifications?

USER: I prefer normal-cost airlines.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure.

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

USER: Thank you.

ASSISTANT: Thanks for approaching us.