You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have a plan to visit Woodland Park Zoo with my children at Seattle, WA - SEA. Can you please book me a direct flight?

ASSISTANT: Sure, I will help you. Kindly, provide me your travelling dates?

USER: Sure, I planned to travel on 09/21 and return on 09/23.

ASSISTANT: Help me with the source code please.

USER: My source is Houston, TX - IAH.

ASSISTANT: Do you have any price limit?

USER: Yes, my price limit is 5000.

ASSISTANT: Thank you for the details, please be on hold.

USER: Sure.

ASSISTANT: Thank you for your time. We hardly tried to provide you flight, unfortunately no flights are available to that locations. May I know your name?

USER: Ok, not an issue. My name is Christopher Wright.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your kind support.