You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Rachel Davis. I need to attend a function in Seattle relating to success meet of the film so please help me with flight ticket booking from Houston.

ASSISTANT: Sure, can you share your journey dates?

USER: Thank you. I have planned my travel dates as 04/29 and 05/01.

ASSISTANT: May I know your airport code for booking?

USER: Sure, I would like to travel from HOU to SEA as these are very much near to my travelling locations.

ASSISTANT: Give me a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.