You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Stephanie Carter.

ASSISTANT: Nice to meet you Stephanie Carter.

USER: I want to book a ticket from IAH to SEA, could you please help me?

ASSISTANT: Sure, may I know your travelling dates?

USER: My required dates are 05/19 and 05/21.

ASSISTANT: I am sorry there is no flight available with us.

USER: It's ok. Thank you for the help.

ASSISTANT: Thank you for approaching us.