You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I have got an invitation from the president, so I need to go to Houston Space Centre. Please help me with booking a flight ticket to IAH.

ASSISTANT: Sure, I am here to help you. Can you please share your source code?

USER: Thank you, my source airport code is SEA.

ASSISTANT: Ok, do you prefer any connection in between the journey?

USER: I need a connecting flight.

ASSISTANT: Ok, on which dates you are willing to travel?

USER: I willing to travel on dates Aug 15 and 17.

ASSISTANT: Ok, please let me know if you have class preference.

USER: I am comfortable with any class.

ASSISTANT: Ok, do you have any other specifications to be met?

USER: That's all, please check the flight.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting, we did not find any flights matching your credentials.

USER: That's ok.

ASSISTANT: May I know your name please?

USER: My name is Samuel Jones.

ASSISTANT: Ok, thank you for reaching us.

USER: Thank you.