You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am willing to make a flight ticket from Houston to reach Oakland. Will you please do that for me?

ASSISTANT: Sure, can I have your name please?

USER: I am happy for your response. My name is Catherine Mitchell.

ASSISTANT: Ok, please share your planned travel dates?

USER: My planned travel dates are Jan 5th and Jan 7th.

ASSISTANT: Can you help me with the airport code of Houston?

USER: Sure, the nearest airport to my current location is IAH.

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in a single connecting flight.

ASSISTANT: Sorry, Catherine Mitchell, no flights found with your given dates.

USER: It's ok, not an issue with that. Thank you for searching the flights.

ASSISTANT: Thank you for opting us.